Force & Motion

A student places a ball on the ground and kicks it hard. The ball moves along the ground. Which statement is true?

• The kick decreases the weight of the ball

• The kick applies force, which changes the direction of the ball.

• The kick decreased the force of gravity acting on the ball.

• The kick removes friction between the ball and the ground.

Tags

NGSS.MS-PS2-2

You have two objects of the same mass that collide. If they are going the same speed when they collide. What would be the result of the force?

• The net force is going towards the left.

• The net force is going towards the right.

• The net force is zero. The forces will cancel each other.

Tags

NGSS.MS-PS2-1

Which ball would create more force upon impact?

• a fast moving ball

• a slow moving ball

• a ball at rest

• none of the above

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A force is described as . . .

• a push only

• a pull only

• a push or a pull

• none of the above

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What unit do scientists use to measure force?

• Newton

• Grams

• Meters

• Meter per second per second

The moon has a smaller mass than the Earth. If you were able to travel to the moon your weight would...

• Increase

• Decrease

• Stay the same

• Vary with day and night

Tags

NGSS.MS-PS2-4

Which force always pulls downward on objects?

• Support force

• Friction force

• Gravity

• Air resistance

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NGSS.MS-PS2-4

Which ball will hit the ground first?

• Metal first, then plastic, then wood last

• Wood first, then plastic, then metal last

• They will all hit at the same time

• There is no way to tell

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A ball is moving in a certain direction.  What would happen to the ball if a greater force was applied on the ball along its direction of motion?

• The speed of the ball would decrease.
• The speed of the ball would increase.
• The ball will stop instantly.
• The ball will change direction.

Tags

NGSS.MS-PS2-2

Why does a rolling ball stop?

• Gravity
• Friction
• Waterfalls
• Sand

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4