Force and Motion Test Study Guide

A satellite was in two separate crashes. In both crashes, the satellite had the same mass. Engineers want to know about the speed and direction of the satellite after the crashes. Why would the crash affect the motion of the satellite, and which crash caused a greater change in motion for the satellite?

• The crash affects the motion due to the change in velocity, and the crash with the greater force caused a greater change in motion.

• The crash affects the motion due to the change in mass, and the crash with the greater mass caused a greater change in motion.

• The crash affects the motion due to the change in temperature, and the crash with the higher temperature caused a greater change in motion.

• The crash affects the motion due to the change in color, and the crash with the brighter color caused a greater change in motion.

When two forces acting on an object are equal in size and in the opposite direction they are _________.

• Balanced Forces.

• Unbalanced Forces.

• Gravitational Forces.

• Frictional Forces.

In which direction was the blue boat hit?

• In Front

• From Behind

How much did the blue boat's speed change?

• 5 km/h.

• 10 km/h.

• 15 km/h.

• 20 km/h.

In which direction was the orange boat hit?

• In Front

• From Behind

How much did the orange boat's speed change?

• 5 km/h.

• 10 km/h.

• 15 km/h.

• 20 km/h.

In which direction was the gray boat hit?

• In Front

• From Behind

How much did the boat's speed change?

• 5 km/h

• 10 km/h

• 15 km/h

• 20 km/h

Which toy boat(s) experienced the strongest force when it was bumped? How do you know?

• The blue toy boat experienced the strongest force because it takes a stronger force to slow something down than it takes to speed something up.

• The gray toy boat experienced the strongest force because it had the fastest ending speed.

• The orange and gray toy boats experienced the strongest forces because they both gained the same force as they sped up. The blue boat lost force, so it slowed down.

• All three toy boats experienced the same strength force because they changed speed by the same amount.

When a car is accelerating, we are used to the idea that the car is going faster. However, in science, when an object (like a car) is accelerating, we are referring to an object:

• is going faster

• is changing its velocity

• is experiencing a net force

• All of the Above