Category 1
A football player catches the football
a. the ball will speed up
b. the ball will slow down
c. the ball will stop
d. the ball will change directions
c. the ball will stop
Which is the best example of gravity acting on an object?
a. A girl skating over ice begins speeding up.
b. A boy on a stairway starts climbing up two steps at a time.
c. A toy car at the top of a ramp begins rolling down.
d. A boy on a skateboard glides by on a level sidewalk.
c. A toy car at the top of a ramp begins rolling down.
A ball is thrown up into the air. What will the force of gravity cause the ball to do?
a. speed up as it travels higher and higher
b. slow down as it falls
c. change direction and come back down
c. change direction and come back down
Applying force to an object always causes it to move.
a. true
b. false
b. false
What is necessary to determine the speed of an object?
a. the mass and volume of object
b. shape of object and distance moved
c. mass of object and time took to move
d. distance moved by object and time took to move
d. distance moved by object and time took to move
A golfer hits the golf ball
a. the ball will speed up
b. the ball will slow down
c. the ball will stop
d. the ball will change directions
a. the ball will speed up
Which is the force that pulls a ball to the ground after being dropped?
a. friction
b. gravity
c. air resistance
b. gravity
a. potential energy
b. kinetic energy
c. moving energy
a. potential energy
Which will slow an object in motion?
a. speed
b. friction
c. gravity
d. momentum
b. friction
Energy in motion is
a. kinetic energy
b. potential energy
c. stored energy
a. kinetic energy
Two tennis players hit a ball back and forth
a. the ball will speed up
b. the ball will slow down
c. the ball will stop
d. the ball will change directions
d. the ball will change directions
Which best describes the rate at which an object changes its position over time?
a. force
b. speed
c. distance
d. direction
b. speed
[show graph] Which line segment shows a period of time when the car was stopped?
a. segment BC
b. segment CD
c. segment DE
d. segment EF
b. segment CD
A bulldozer moving dirt is an example of a
a. pull
b. push
c. magnet
b. push
Which is the best way to use the x-axis on a distance-time graph?
a. to represent the position of an object that travels
b. to represent the period of time that an object travels
c. to represent the speed at which an object travels
d. to represent the distance that an object travels
b. to represent the period of time that an object travels
A baseball is hit into the outfield and rolls through the grass.
a. the ball will speed up
b. the ball will slow down
c. the ball will stop
d. the ball will change directions
b. the ball will slow down
A girl lets go of her backpack, and it falls toward the ground. Which is the best explanation for why the backpack moves toward the ground?
a. Friction pulls on the backpack.
b. Gravity pulls on the backpack.
c. The girl exerts a force on the backpack.
d. The backpack’s mass increases.
b. Gravity pulls on the backpack.
A student forms a ball out of clay. Then he pushes the ball and observes its motion along his desk. If he repeats the activity, what should he do to make the ball move faster?
a. change the ball’s starting position
b. change the ball’s shape
c. make the ball heavier
d. push the ball harder
d. push the ball harder
[show graph] Which best describes the motion of runner A and runner B?
a. runner A is slower than runner B
b. runner B is slower than runner A
c. both runner A and runner B run at the same speed, but started in different locations
d. both runner A and runner B run at the same speed, but runner B had a head start
c. both runner A and runner B run at the same speed, but started in different locations
Which is true when equal and opposite forces are applied to an object?
a. forces combine
b. forward movement
c. no change in motion
d. speed of object increases
c. no change in motion
A student rolls a ball down a smooth wooden ramp and observes what happens. Then he puts sandpaper on the ramp and rolls the ball again. What is the student most likely investigating?
a. the effect of a change in gravity on the ball’s motion
b. the effect of a change in mass on the ball’s motion
c. the effect of a change in friction on the ball’s motion
d. the effect of a change in a ball’s motion on the ramp
c. the effect of a change in friction on the ball’s motion
Four wheelbarrows with different masses are sitting in a yard. Which wheelbarrow would require the most force to make it start moving?
a. the wheelbarrow with a mass of 45 kg
b. the wheelbarrow with a mass of 35 kg
c. the wheelbarrow with a mass of 20 kg
d. the wheelbarrow with a mass of 15 kg
a. the wheelbarrow with a mass of 45 kg
When a picnic table cloth is pulled quickly and dishes remain in place it is because of
a. inertia
b. energy
c. magnetism
a. inertia
An object is rolling along the ground. How would decreasing friction most likely affect the motion of the object?
a. It would reduce the object’s speed.
b. It would reverse the object’s direction.
c. It would increase the object’s speed.
d. It would have no effect on the object’s motion.
c. It would increase the object’s speed.
Marley throws a ball straight up into the air. Which of the following best explains the motion of the ball after it leaves her hand?
a. The ball leaves her hand slowly, then the motion of the ball increases.
b. The ball leaves her hand quickly, then the motion of the ball remains constant.
c. The ball leaves her hand quickly, then the motion of the ball decreases.
d. The ball leaves her hand quickly, then the motion of the ball increases.
c. The ball leaves her hand quickly, then the motion of the ball decreases.