Lesson 12 Test Force & Motion

A book sitting on a desk has:

• Balanced forces acting upon it.
• Unbalanced forces acting upon it.
• No forces acting upon it.
• All forces acting upon it.

A bird flies 10 meters in 1 second. By the next second, the bird had flown 5 meters. Which describes how the bird's motion is changing.

• It's speeding up.
• It's slowing down.
• It's stopped.
• It's changed direction.

A soccer ball is kicked into the air. Which best describes the forces acting upon the ball.

• Gravity pulls the ball down and friction stops the ball.
• Gravity bulls the ball down and inertia stops the ball.
• Gravity pulls the ball down and momentum stops the ball.
• Gravity pulls the ball down and air resistance stops the ball.

A rabbit runs for 2 minutes. What else do you need to know to calculate the speed of the rabbit?

• The type of ground he is running on.
• The time of day.
• The distance the rabbit runs.
• The age of the bunny.

Matt & Mike are running in the yard. Matt runs to 1 side of the yard in 35 seconds. Mike runs the same distance in 42 seconds. Which describes the movement of the boys.

• The boys ran uphill.
• Both boys ran at the same speed.
• Matt ran faster than Mike.
• Mike ran faster than Matt.

Tow cars both race the same amount of time. Car A traveled a distance of 500 meters. Car B traveled a distance of 400 meters. Which car is traveling faster?

• Car A
• Car B
• They traveled the same speed.
• You need to know the time they drove to determine which was driving faster.

John & Matt both kicked a ball. John's ball goes farther. Which explains why John's ball goes farther?

• Matt kicked the ball with more force.
• John kicked the ball with more force.
• Matt did not apply any force.
• John and Matt applied the same amount of foree.

Which describes the motion of the object between 2 and 6 seconds?

• Constant speed.
• Not moving.
• Increasing speed.
• Decreasing speed.

How long did the object move for the second time it started moving.

• 1 second
• 3 seconds
• 4 seconds
• 10 seconds

Which best describes what happened at 9 seconds?

• The object changed direction.
• The object stopped.
• The object increased in speed.
• The object decreased in speed.