Force and Motion

What will happen if you were to drop a 16mm steel marble and a 16mm cork marble onto the floor from the same height and at the same time?

• The steel marble will land first.

• The cork marble will land first.

• Both the steel marble and the cork marble will land at the same time.

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.

When you slide a box across the floor, what force must your push be stronger than?

• Support Force

• Friction Force

• Gravity

• Air resistance

Tags

NGSS.MS-PS2-2

A force is described as . . .

• a push only

• a pull only

• a push or a pull

• none of the above

Which person in the diagram is moving the fastest?

• A

• B

• C

• D

What unit do scientists use to measure force?

• Newton

• Grams

• Meters

• Meter per second per second

What is the net force on the box shown in the picture?

• 10 N to the left

• 10 N to the right

• 60 N to the left

• 50 N to the right

Tags

NGSS.HS-PS2-1

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

Which force always pulls downward on objects?

• Support force

• Friction force

• Gravity

• Air resistance

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