Physics 1: Exam 1 ACTUAL UPDATED QUESTIONS AND CORRECT ANSWERS
A ball is tossed vertically upward. When it reaches its d) the velocity is zero, the acceleration is directed downward, and the force of
highest point (before falling back downward): gravity acting on the ball is directed downward
a) the velocity is zero, the acceleration is zero, and the
force of gravity acting on the ball is zero
b) the velocity, and acceleration, and the force of gravity
on the ball all reverse direction
c) the velocity is zero, the accretion is zero, and the force
of gravity acting on the ball is directed downward
d) the velocity is zero, the acceleration is directed
downward, and the force of gravity acting on the ball is
directed downward
e) the velocity and acceleration reverse direction, but the
force of gravity on the ball remains downward
If you push a 4-kg mass with the same force that you d) the 4-kg mass accelerates 3 times faster than the 12-kg mass
push a 12-kg mass from rest, then:
a) both masses accelerate at the same rate
b) the 4-kg mass accelerates 4 times faster than the 12-kg
mass
c) the 12-kg mass accelerated 4 times faster than the 4-kg
mass
d) the 4-kg mass accelerates 3 times faster than the 12-kg
mass
e) the 12-kg mass accelerates 3 times faster than the 4-kg
mass
,Three boys each pull with a 20 N force on the same d) 20 N to the left
object, as shown in Fig. 3-4. The resultant force will be:
a) 20 N down
b) cannot be determined; insufficient information
c) zero
d) 20 N to the left
e) 20 N up
Which of the following ideas is true about projectile c) The horizontal motion is independent of the vertical motion
motion with no air drag?
a) The trajectory will depend on the object's mass as well
as its initial velocity and launch angle
b) The velocity of the object is zero at the point of
maximum elevation
c) The horizontal motion is independent of the vertical
motion
d) The acceleration is +g when the object is rising and -g
when falling
If you toss a coin straight upward in train that slows while b) in front of you
the coin is in the air, the coin will land:
a) as if you were at rest
b) in front of you
c) in back of you
A ball rolls off the edge of a table. The horizontal b) the ball is not acted upon by a force in the horizontal direction
component of the ball's velocity remains constant during
its entire trajectory because:
a) the net force acting on the ball is zero
b) the ball is not acted upon by a force in the horizontal
direction
c) the ball is not acted upon by a force in the vertical
direction
d) the ball is not acted upon by any force
e) none of the other choices is correct
, A bag of groceries that has a mass of 10 kilograms weighs b) 100 N
about
a) 1000 N
b) 100 N
c) greater than 1000 N
d) 10 N
e) 1 N
The figure shows the position of an object (moving along c) The object is accelerating to the left and slowing down
a straight line) as a function of time. The object is moving
to the right. Which of the following statements about this
object is true over the interval shown?
a) The average speed of the object is 1.0 m/s
b) The acceleration of the object is in the same direction
as it velocity
c) The object is accelerating to the left and slowing down
d) The object is accelerating to the right and speeding up
After a rock thrown straight up reaches the top of its path c) the same as at the top of its path
and then falls a short distance, its acceleration is (neglect
air resistance)
a) less than at the top of its path
b) greater than at the top if its path
c) the same as at the top of its path
Inertia is defined as a c) property of matter
a) change in motion
b) force
c) property of matter
d) none of the above
An object is moving with constant non-zero velocity in b) a straight line making an angle with the time axis
the +x-axis. The position versus time graph of this object
is:
a) a hyperbolic curve
b) a straight line making an angle with the time axis
c) a vertical straight line
d) a parabolic curve
e) a horizontal straight line
The amount of force needed to sustain motion of a rock c) none of these
in outer space is
a) a force equal to its weight
b) a force less than its weight if friction is absent
c) none of these
A ball is tossed vertically upward. When it reaches its d) the velocity is zero, the acceleration is directed downward, and the force of
highest point (before falling back downward): gravity acting on the ball is directed downward
a) the velocity is zero, the acceleration is zero, and the
force of gravity acting on the ball is zero
b) the velocity, and acceleration, and the force of gravity
on the ball all reverse direction
c) the velocity is zero, the accretion is zero, and the force
of gravity acting on the ball is directed downward
d) the velocity is zero, the acceleration is directed
downward, and the force of gravity acting on the ball is
directed downward
e) the velocity and acceleration reverse direction, but the
force of gravity on the ball remains downward
If you push a 4-kg mass with the same force that you d) the 4-kg mass accelerates 3 times faster than the 12-kg mass
push a 12-kg mass from rest, then:
a) both masses accelerate at the same rate
b) the 4-kg mass accelerates 4 times faster than the 12-kg
mass
c) the 12-kg mass accelerated 4 times faster than the 4-kg
mass
d) the 4-kg mass accelerates 3 times faster than the 12-kg
mass
e) the 12-kg mass accelerates 3 times faster than the 4-kg
mass
,Three boys each pull with a 20 N force on the same d) 20 N to the left
object, as shown in Fig. 3-4. The resultant force will be:
a) 20 N down
b) cannot be determined; insufficient information
c) zero
d) 20 N to the left
e) 20 N up
Which of the following ideas is true about projectile c) The horizontal motion is independent of the vertical motion
motion with no air drag?
a) The trajectory will depend on the object's mass as well
as its initial velocity and launch angle
b) The velocity of the object is zero at the point of
maximum elevation
c) The horizontal motion is independent of the vertical
motion
d) The acceleration is +g when the object is rising and -g
when falling
If you toss a coin straight upward in train that slows while b) in front of you
the coin is in the air, the coin will land:
a) as if you were at rest
b) in front of you
c) in back of you
A ball rolls off the edge of a table. The horizontal b) the ball is not acted upon by a force in the horizontal direction
component of the ball's velocity remains constant during
its entire trajectory because:
a) the net force acting on the ball is zero
b) the ball is not acted upon by a force in the horizontal
direction
c) the ball is not acted upon by a force in the vertical
direction
d) the ball is not acted upon by any force
e) none of the other choices is correct
, A bag of groceries that has a mass of 10 kilograms weighs b) 100 N
about
a) 1000 N
b) 100 N
c) greater than 1000 N
d) 10 N
e) 1 N
The figure shows the position of an object (moving along c) The object is accelerating to the left and slowing down
a straight line) as a function of time. The object is moving
to the right. Which of the following statements about this
object is true over the interval shown?
a) The average speed of the object is 1.0 m/s
b) The acceleration of the object is in the same direction
as it velocity
c) The object is accelerating to the left and slowing down
d) The object is accelerating to the right and speeding up
After a rock thrown straight up reaches the top of its path c) the same as at the top of its path
and then falls a short distance, its acceleration is (neglect
air resistance)
a) less than at the top of its path
b) greater than at the top if its path
c) the same as at the top of its path
Inertia is defined as a c) property of matter
a) change in motion
b) force
c) property of matter
d) none of the above
An object is moving with constant non-zero velocity in b) a straight line making an angle with the time axis
the +x-axis. The position versus time graph of this object
is:
a) a hyperbolic curve
b) a straight line making an angle with the time axis
c) a vertical straight line
d) a parabolic curve
e) a horizontal straight line
The amount of force needed to sustain motion of a rock c) none of these
in outer space is
a) a force equal to its weight
b) a force less than its weight if friction is absent
c) none of these
