Force and Motion Test Review

Front

Which of Newton’s laws BEST explains why the driver of a van transporting a wedding cake should be careful when making stops and turns?

Back

Law of Inertia

Front

A skater pushes off a wall and skates backward for a few meters before stopping. Which statement best describes an action-reaction force pair in this situation?

Back

The wall pushes on the skater when the skater pushes on the wall.

Front

A duck swimming in a stream pushes against the water with 20 Newtons of force, while the water exerts 15 Newtons of resistant force against the duck. What is the resulting motion of the duck?

Back

The duck will continue moving in its current direction.

Front

A roller coaster with three 300 kg cars is accelerating at 10 m/s before stopping. How much force was exerted to stop it?

Back

9000 N

Front

A mother and daughter press their hands together and then push apart while ice skating. Immediately after they push away from each other, how does the motion of the mother and daughter change?

Back

Both move backward, but the daughter moves with a greater acceleration since she has less mass.

Front

A block is pulled 0.90 m to the right in 2.5 s. What is the block's average speed to the nearest hundredth of a m/s?

Back

0.36 m/s

Front

A group of four students is participating in a marble race. Each marble has a different mass and the same force is applied to each marble. Which law best describes this experiment?

Back

Law of Force and Acceleration

Front

A bus travels 20 km in 30 minutes. What is the average speed of the bus in km/hr?

Back

40 km/hr

Front

Force applied to a 0.4 kg soccer ball with acceleration 2,550 m/s².

Back

1,020.0 N

Front

What is the net force and direction of the force for the diagram?

Back

20 left