SL Physics
Midterm
exam with
100%
correct
answers
A projectile is launched at 20m/s at 60
degree angle from the horizontal. How much
time does it take for the projectile to land,
,assuming it lands on ground that is level with
the launch site? - answer 3.6s
Which of the following is not a unit of the
metric ststem or Systeme International? -
answer Yard
A snow skier is at the top of a mountain
trying to decide which ski run to take since
they all have different slopes. He wants to
slide down with a constant speed. If the
coefficient of kinetic friction between his skis
and the snow is .05, find the angle of the
path he should choose. - answer 2.8 degrees
Which is not true? - answer Vector products
and scalar products both change sign for
angles greater than 90 degrees.
Consider a mass of 85 kg lying on the
ground. The coefficient of static friction
between them is us=.65. What is the
minimum force you need to apply in order to
slide the mass? - answer 541N
,Which is correct magnitude of the position
vector for the following description of the
motion of an object?
A car moves 3 blocks west, then 2 blocks
north, then 3 blocks south before stopping
briefly. It then moves 1 block east and finally
2 blocks south. - answer 3.6 blocks
A rock is thrown vertically up into the air. It
reaches a maximum height 15m above the
point where it was released. What is its
initial velocity? - answer 17m/s
In an inertial reference frame, _________. -
answer Newtons three laws are apparent
and valid.
Two small cards with masses m1=17kg and
m2=23kg, are attatched by two ideal ropes
to a steel ball of mass mb=100 as shown in
the diagram. What are the accelerations of
the carts and the ball? - answer 7m/s^2
A bead on a wire has an acceleration that is
linear with time: a=kt, where k is equal to
, 0.75 cm/s^3 and t is given in seconds. If the
bead has an initial velocity of 1cm/s, what is
the velocity of 3 seconds after the motion
begins. - answer 4.4cm/s
Which of the following statements
concerning an objects in free fall through the
atmosphere is incorrect? - answer The speed
of a falling object increases due to the
frictional force of air drag.
If a vector pointing toward the north is
crossed with one pointing toward the east,
the resulting vector is pointing_______. -
answer Down
How fast must a baseball move as it leaves
your hand if it reaches a maximum height of
15.0m above the point where it left your
hand? - answer 17.1m/s
A person with mass m is on a ride in an
amusement park. She is accelerated by a
vertical wall with an acceleration of a and her
feet are not touching the floor. Ignoring air
Midterm
exam with
100%
correct
answers
A projectile is launched at 20m/s at 60
degree angle from the horizontal. How much
time does it take for the projectile to land,
,assuming it lands on ground that is level with
the launch site? - answer 3.6s
Which of the following is not a unit of the
metric ststem or Systeme International? -
answer Yard
A snow skier is at the top of a mountain
trying to decide which ski run to take since
they all have different slopes. He wants to
slide down with a constant speed. If the
coefficient of kinetic friction between his skis
and the snow is .05, find the angle of the
path he should choose. - answer 2.8 degrees
Which is not true? - answer Vector products
and scalar products both change sign for
angles greater than 90 degrees.
Consider a mass of 85 kg lying on the
ground. The coefficient of static friction
between them is us=.65. What is the
minimum force you need to apply in order to
slide the mass? - answer 541N
,Which is correct magnitude of the position
vector for the following description of the
motion of an object?
A car moves 3 blocks west, then 2 blocks
north, then 3 blocks south before stopping
briefly. It then moves 1 block east and finally
2 blocks south. - answer 3.6 blocks
A rock is thrown vertically up into the air. It
reaches a maximum height 15m above the
point where it was released. What is its
initial velocity? - answer 17m/s
In an inertial reference frame, _________. -
answer Newtons three laws are apparent
and valid.
Two small cards with masses m1=17kg and
m2=23kg, are attatched by two ideal ropes
to a steel ball of mass mb=100 as shown in
the diagram. What are the accelerations of
the carts and the ball? - answer 7m/s^2
A bead on a wire has an acceleration that is
linear with time: a=kt, where k is equal to
, 0.75 cm/s^3 and t is given in seconds. If the
bead has an initial velocity of 1cm/s, what is
the velocity of 3 seconds after the motion
begins. - answer 4.4cm/s
Which of the following statements
concerning an objects in free fall through the
atmosphere is incorrect? - answer The speed
of a falling object increases due to the
frictional force of air drag.
If a vector pointing toward the north is
crossed with one pointing toward the east,
the resulting vector is pointing_______. -
answer Down
How fast must a baseball move as it leaves
your hand if it reaches a maximum height of
15.0m above the point where it left your
hand? - answer 17.1m/s
A person with mass m is on a ride in an
amusement park. She is accelerated by a
vertical wall with an acceleration of a and her
feet are not touching the floor. Ignoring air
