AP Physics 1 Unit 1 Progress Check:
MCQ Questions and Answers
Rock X is released from rest at the top of a cliff that is on Earth. A short time later, Rock Y is
released from rest from the same location as Rock X. Both rocks fall for several seconds
before landing on the ground directly below the cliff. Frictional forces are considered to be
negligible.
Which of the following graphs correctly shows the vertical velocity of rock X as a function of
time? Take the positive direction to be upward. ✅✅Velocity time graph with a negative
linear line below the x-axis.
Rock X is released from rest at the top of a cliff that is on Earth. A short time later, Rock Y is
released from rest from the same location as Rock XX. Both rocks fall for several seconds
before landing on the ground directly below the cliff. Frictional forces are considered to be
negligible.
Which of the following graphs best represents the vertical displacement of Rock X as a
function of time starting from immediately after the rock is released from rest? Take the
, positive direction to be downward. ✅✅Vertical displacement time graph with an
increasing exponential line.
Rock X is released from rest at the top of a cliff that is on Earth. A short time later, Rock Y is
released from rest from the same location as Rock X. Both rocks fall for several seconds
before landing on the ground directly below the cliff. Frictional forces are considered to be
negligible.
After Rock Y is released from rest several seconds after Rock X is released from rest, what
happens to the separation distance S between the rocks as they fall but before they reach the
ground, and why? Take the positive direction to be downward. ✅✅S increases because at
all times Rock X falls with a greater speed than Rock Y.
Toy car W travels across a horizontal surface with an acceleration of Aw after starting from
rest. Toy car Z travels across the same surface toward car W with an acceleration of Az after
starting from rest. Car W is separated from car Z by a distance d. Which of the following
pairs of equations could be used to determine the location on the horizontal surface where the
two cars will meet, and why? ✅✅x=x+vt+0.5Axt^2 for car W, x=x+vt+0.5Axt^2 and for
MCQ Questions and Answers
Rock X is released from rest at the top of a cliff that is on Earth. A short time later, Rock Y is
released from rest from the same location as Rock X. Both rocks fall for several seconds
before landing on the ground directly below the cliff. Frictional forces are considered to be
negligible.
Which of the following graphs correctly shows the vertical velocity of rock X as a function of
time? Take the positive direction to be upward. ✅✅Velocity time graph with a negative
linear line below the x-axis.
Rock X is released from rest at the top of a cliff that is on Earth. A short time later, Rock Y is
released from rest from the same location as Rock XX. Both rocks fall for several seconds
before landing on the ground directly below the cliff. Frictional forces are considered to be
negligible.
Which of the following graphs best represents the vertical displacement of Rock X as a
function of time starting from immediately after the rock is released from rest? Take the
, positive direction to be downward. ✅✅Vertical displacement time graph with an
increasing exponential line.
Rock X is released from rest at the top of a cliff that is on Earth. A short time later, Rock Y is
released from rest from the same location as Rock X. Both rocks fall for several seconds
before landing on the ground directly below the cliff. Frictional forces are considered to be
negligible.
After Rock Y is released from rest several seconds after Rock X is released from rest, what
happens to the separation distance S between the rocks as they fall but before they reach the
ground, and why? Take the positive direction to be downward. ✅✅S increases because at
all times Rock X falls with a greater speed than Rock Y.
Toy car W travels across a horizontal surface with an acceleration of Aw after starting from
rest. Toy car Z travels across the same surface toward car W with an acceleration of Az after
starting from rest. Car W is separated from car Z by a distance d. Which of the following
pairs of equations could be used to determine the location on the horizontal surface where the
two cars will meet, and why? ✅✅x=x+vt+0.5Axt^2 for car W, x=x+vt+0.5Axt^2 and for
