Force & Motion

Which toy boat(s) experienced the strongest force when it was bumped? (Hint: They are all the same mass, look at the change in speed)

• Blue

• Orange

• Grey

• All three boats experienced the same strength force.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which chair(s) experienced the strongest force when hit? (Hint: Look at the change in speed, not ending speed)

• The blue and red chairs experienced the strongest force because they are both more massive than the yellow chair and they changed speed by the same amount.

• The red chair experienced the strongest force because it is as massive as the blue chair and has the highest ending speed.

• All three chairs experienced the same force because they changed speed by the same amount.

• The blue chair experienced the strongest force because it takes more force to slow an object than it takes to make it go faster.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

In which crash did the skateboard experience a stronger force? Why? (Hint: Think about how mass affects change in velocity)

• The skateboard did not experience a force; only the shopping cart experienced a force in the crashes.

• Crash 2; the force on the cart was stronger in this crash, so the force on the skateboard was also stronger

• The diagram doesn’t tell you anything about the force on the skateboard. It only gives information about the force on the shopping cart.

• The skateboard experienced the same force in both crashes. The shopping cart changed speed by the same amount in each crash, so the force on the skateboard was the same each time.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Sandra pushed a wooden block and it slid across the floor. The wooden block gradually slowed down and stopped after moving 10 meters. Why did the block stop moving?

• The floor exerted a force that is opposite to the direction of the block’s motion.

• The block ran out of force

• The floor absorbs force from the block.

• All objects stop moving because their natural state is to be still.

Tags

NGSS.MS-PS2-2

Push or pull exerted on an object

• Force

• Inertia

• Velocity

• Mass

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The rate at which velocity changes

• speed

• acceleration

• displacement

• friction

Tendency of an object to resist any change in motion

• Force

• Mass

• Velocity

• Inertia

Distance something travels in a certain amount of time

• Speed

• Velocity

• Acceleration

• Distance

Distance something travels in a certain amount of time in a particular direction

• Speed

• Velocity

• Acceleration

• Distance

Tags

NGSS.MS-PS3-1

Rate that an object changes speed and direction

• Speed

• Velocity

• Acceleration

• Distance