TEST BANK PHYSICAL EXAMINATION & HEALTH
ASSESSMENT 9TH EDITION BY CAROLYN
JARVIS| ALL CHAPTERS COVERED| TEST BANK
100% VERIfiED ANSWERS
Which one, temperature, velocity, acceleration, or displacement, is not a
vector quantity? (U1) - ANSWER-temperature
An object moves 20 m east in 30 s and then returns to its starting point
taking an additional 50 s. If west is chosen as the positive direction, what
is the sign associated with the average velocity of the object? (U1) -
ANSWER-0, no sign
An object moves 20 m east in 30 s and then returns to its starting point
taking an additional 50 s. If west is chosen as the positive direction, what
is the average speed of the object? (U1) - ANSWER-0.50 m/s
A cheetah can run at approximately 100 km/hr and a gazelle at 80.0
km/hr. If both animals are running at full speed, with the gazelle 70.0 m
ahead, how long before the cheetah catches its prey? (U1) - ANSWER-
12.6 s
A railroad train travels forward along a straight track at 80.0 m/s for 1
000 m and then travels at 50.0 m/s for the next 1 000 m. What is the
average velocity? (U1) - ANSWER-61.5 m/s
A European sports car dealer claims that his car will accelerate at a
constant rate from rest to 100 km/hr in 8.00 s. If so, what is the
acceleration? (U1) - ANSWER-3.47 m/s^2
A European sports car dealer claims that his product will accelerate at a
constant rate from rest to a speed of 100 km/hr in 8.00 s. What is the
speed after the first 5.00 s of acceleration? (U1) - ANSWER-17.4 m/s
,A v vs. t graph is drawn for a ball moving in one direction. The graph
starts at the origin and at t = 5 s the acceleration of the ball is zero. What
is the velocity of the ball at t = 5 s? (U1) - ANSWER-the velocity of the
ball is not changing
The value of an object's acceleration may be characterized in equivalent
words by what? (U1) - ANSWER-rate of change of velocity
A 50-g ball traveling at 25.0 m/s is bounced off a brick wall and rebounds
at 22.0 m/s. A high-speed camera records this event. If the ball is in
contact with the wall for 3.50 ms, what is the average acceleration of the
ball during this time interval? (U1) - ANSWER-13,400 m/s^2
A ball is pushed with an initial velocity of 4.0 m/s. The ball rolls down a
hill with a constant acceleration of 1.6 m/s^2 . The ball reaches the
bottom of the hill in 8.0 s. What is the ball's velocity at the bottom of the
hill? (U1) - ANSWER-17 m/s
A cart is given an initial velocity of 5.0 m/s and experiences a constant
acceleration of 2.0 m/s^2 . What is the magnitude of the cart's
displacement during the first 6.0 s of its motion? (U1) - ANSWER-66 m
When a drag strip vehicle reaches a velocity of 60 m/s, it begins a
negative acceleration by releasing a drag chute and applying its brakes.
While reducing its velocity back to zero, its acceleration along a straight
line path is a constant -7.5 m/s^2 . What displacement does it undergo
during this deceleration period? (U1) - ANSWER-240 m
A drag racer starts from rest and accelerates at 10 m/s2 for the entire
distance of 400 m (1/4 mile). What is the velocity of the race car at the
end of the run? (U1) - ANSWER-89 m/s
A Cessna aircraft has a lift-off speed of 120 km/hr. What minimum
constant acceleration does this require if the aircraft is to be airborne
after a take-off run of 240 m? (U1) - ANSWER-2.31 m/s^2
A rock is thrown straight up with an initial velocity of 24.5 m/s.What
maximum height will the rock reach before starting to fall downward?
Take acceleration due to gravity as 9.80 m/s^2 . (U1) - ANSWER-30.6 m
, A rock is thrown straight up with an initial velocity of 19.6 m/s. What
time interval elapses between the rock's being thrown and its return to
the original launch point? (U1) - ANSWER-4.00 s
A baseball is released at rest from the top of the Washington Monument.
It hits the ground after falling for 6.0 s. What was the height from which
the ball was dropped? Ignore air resistance. (U1) - ANSWER-1.8 x 10^2 m
A rock, released at rest from the top of a tower, hits the ground after 1.5
s. What is the speed of the rock as it hits the ground? Ignore air
resistance. (U1) - ANSWER-15 m/s
Human reaction time is usually about 0.20 s. If your lab partner holds a
ruler between your finger and thumb and releases it without warning,
how far can you expect the ruler to fall before you catch it? (U1) -
ANSWER-20 cm
A hiker walks 200 m west and then walks 100 m north. In what direction
is her resulting displacement? (U1) - ANSWER-26.6 degrees N of W
A taxicab moves five blocks due north, five blocks due east, and another
two blocks due north. Assume all blocks are of equal size. What is the
magnitude of the taxi's displacement, start to finish? (U1) - ANSWER-8.6
blocks
The following force vectors act on an object: i) 50.0 newtons at 45.0
north of east and ii) 25.0 newtons at 30.0 south of east. What is the
magnitude of the resultant force and its angle relative to the easterly
direction? (U1) - ANSWER-61.4 newton at 21.8 degrees
A string attached to an airborne kite is maintained at an angle of 40
degrees with the horizontal. If a total of 120 m of string is reeled in while
bringing the kite back to the ground, what is the horizontal displacement
of the kite in the process? Assume the kite string doesn't sag. (U1) -
ANSWER-92 m
Jack pulls a sled across a level field by exerting a force of 110 N at an
angle of 30 degrees with the ground. What are the parallel and
perpendicular components, respectively, of this force with respect to the
ground? (U1) - ANSWER-95 N, 55 N
ASSESSMENT 9TH EDITION BY CAROLYN
JARVIS| ALL CHAPTERS COVERED| TEST BANK
100% VERIfiED ANSWERS
Which one, temperature, velocity, acceleration, or displacement, is not a
vector quantity? (U1) - ANSWER-temperature
An object moves 20 m east in 30 s and then returns to its starting point
taking an additional 50 s. If west is chosen as the positive direction, what
is the sign associated with the average velocity of the object? (U1) -
ANSWER-0, no sign
An object moves 20 m east in 30 s and then returns to its starting point
taking an additional 50 s. If west is chosen as the positive direction, what
is the average speed of the object? (U1) - ANSWER-0.50 m/s
A cheetah can run at approximately 100 km/hr and a gazelle at 80.0
km/hr. If both animals are running at full speed, with the gazelle 70.0 m
ahead, how long before the cheetah catches its prey? (U1) - ANSWER-
12.6 s
A railroad train travels forward along a straight track at 80.0 m/s for 1
000 m and then travels at 50.0 m/s for the next 1 000 m. What is the
average velocity? (U1) - ANSWER-61.5 m/s
A European sports car dealer claims that his car will accelerate at a
constant rate from rest to 100 km/hr in 8.00 s. If so, what is the
acceleration? (U1) - ANSWER-3.47 m/s^2
A European sports car dealer claims that his product will accelerate at a
constant rate from rest to a speed of 100 km/hr in 8.00 s. What is the
speed after the first 5.00 s of acceleration? (U1) - ANSWER-17.4 m/s
,A v vs. t graph is drawn for a ball moving in one direction. The graph
starts at the origin and at t = 5 s the acceleration of the ball is zero. What
is the velocity of the ball at t = 5 s? (U1) - ANSWER-the velocity of the
ball is not changing
The value of an object's acceleration may be characterized in equivalent
words by what? (U1) - ANSWER-rate of change of velocity
A 50-g ball traveling at 25.0 m/s is bounced off a brick wall and rebounds
at 22.0 m/s. A high-speed camera records this event. If the ball is in
contact with the wall for 3.50 ms, what is the average acceleration of the
ball during this time interval? (U1) - ANSWER-13,400 m/s^2
A ball is pushed with an initial velocity of 4.0 m/s. The ball rolls down a
hill with a constant acceleration of 1.6 m/s^2 . The ball reaches the
bottom of the hill in 8.0 s. What is the ball's velocity at the bottom of the
hill? (U1) - ANSWER-17 m/s
A cart is given an initial velocity of 5.0 m/s and experiences a constant
acceleration of 2.0 m/s^2 . What is the magnitude of the cart's
displacement during the first 6.0 s of its motion? (U1) - ANSWER-66 m
When a drag strip vehicle reaches a velocity of 60 m/s, it begins a
negative acceleration by releasing a drag chute and applying its brakes.
While reducing its velocity back to zero, its acceleration along a straight
line path is a constant -7.5 m/s^2 . What displacement does it undergo
during this deceleration period? (U1) - ANSWER-240 m
A drag racer starts from rest and accelerates at 10 m/s2 for the entire
distance of 400 m (1/4 mile). What is the velocity of the race car at the
end of the run? (U1) - ANSWER-89 m/s
A Cessna aircraft has a lift-off speed of 120 km/hr. What minimum
constant acceleration does this require if the aircraft is to be airborne
after a take-off run of 240 m? (U1) - ANSWER-2.31 m/s^2
A rock is thrown straight up with an initial velocity of 24.5 m/s.What
maximum height will the rock reach before starting to fall downward?
Take acceleration due to gravity as 9.80 m/s^2 . (U1) - ANSWER-30.6 m
, A rock is thrown straight up with an initial velocity of 19.6 m/s. What
time interval elapses between the rock's being thrown and its return to
the original launch point? (U1) - ANSWER-4.00 s
A baseball is released at rest from the top of the Washington Monument.
It hits the ground after falling for 6.0 s. What was the height from which
the ball was dropped? Ignore air resistance. (U1) - ANSWER-1.8 x 10^2 m
A rock, released at rest from the top of a tower, hits the ground after 1.5
s. What is the speed of the rock as it hits the ground? Ignore air
resistance. (U1) - ANSWER-15 m/s
Human reaction time is usually about 0.20 s. If your lab partner holds a
ruler between your finger and thumb and releases it without warning,
how far can you expect the ruler to fall before you catch it? (U1) -
ANSWER-20 cm
A hiker walks 200 m west and then walks 100 m north. In what direction
is her resulting displacement? (U1) - ANSWER-26.6 degrees N of W
A taxicab moves five blocks due north, five blocks due east, and another
two blocks due north. Assume all blocks are of equal size. What is the
magnitude of the taxi's displacement, start to finish? (U1) - ANSWER-8.6
blocks
The following force vectors act on an object: i) 50.0 newtons at 45.0
north of east and ii) 25.0 newtons at 30.0 south of east. What is the
magnitude of the resultant force and its angle relative to the easterly
direction? (U1) - ANSWER-61.4 newton at 21.8 degrees
A string attached to an airborne kite is maintained at an angle of 40
degrees with the horizontal. If a total of 120 m of string is reeled in while
bringing the kite back to the ground, what is the horizontal displacement
of the kite in the process? Assume the kite string doesn't sag. (U1) -
ANSWER-92 m
Jack pulls a sled across a level field by exerting a force of 110 N at an
angle of 30 degrees with the ground. What are the parallel and
perpendicular components, respectively, of this force with respect to the
ground? (U1) - ANSWER-95 N, 55 N
