Force & Motion

Look at the figures to the right. Which figure will remain stationary unless an external force acts on it? Assume there is no friction. Explain your answer. (S8P3b)

• Figure 1

• Figure 2

Which of the following statements describe a change in acceleration.

• a. A car stopped at a stop sign.

• b. A boat traveling east at 10 knots

• c. An airplane traveling north 600 miles per hour.

• d. A person running at 5 meters/second along a curving path.

Tags

NGSS.MS-PS2-2

In Segment C-D how is the bus moving?

• accelerating

• decelerating

• at rest

• at constant speed

Tags

NGSS.MS-PS3-1

Daniel is trying to understand the concept of mass. He asks Priya, 'What is mass?' Priya explains that mass is:

• The change in Daniel's position over time

• The total amount of force on an object that Daniel is holding

• The amount of matter in an object that Daniel is holding

• The effect of gravitational force on the mass of an object that Daniel is holding

• A push or pull on an object that puts it in motion when Daniel pushes or pulls it

Which picture(s) shows an unbalanced force?

• 
• 
• 
• 

Tags

NGSS.HS-PS2-1

You're riding in the car when your dad slams on brakes. What happens to you?

• Your body continues to move forward.

• Your body moves backward.

• You stay in the same position.

• Your gravity takes over.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Noah and Grace are playing with a toy car. Aria pushes the car and it starts moving. Which force is Aria applying to produce a change in the car's motion?

• unbalanced force

• balanced force

• gravitational force

• frictional force

Tags

NGSS.MS-PS2-2

If the man and the ball travels 90 m in 9 seconds, what is their average speed?

• 10 m/s

• 180 m/s

• 99 m/s

• 10 meters

a force is best defined as ---

• the application of weight

• a push or pull that is exerted on matter

• the flow of electric charges

• a bond in which electrons are shared

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A student pushes against a wall with 20 N of force and the wall does not move. In this situation, the wall exerts --

• 0 N of force

• less than 20 N of force

• 20 N of force

• more than 20 N of force

Tags

NGSS.MS-PS2-1