Force and Motion

Work is done when an object is moved in the _______ of the applied force.

• opposite

• right

• same

• upside down

If 1000J are applied to move a 60N object, how far did it move?

• 0.06m

• 16.67m

• 60,000m

Tags

NGSS.HS-PS3-1

One way to increase the amount of work is to increase force. What is another way?

• Increase the carrying distance

• Decrease the power

• Increase the distance

• Decrease the amount of time in which you move the object.

The child is hold a flower. Is the child doing work?

• Yes

• No

What are two ways to decrease power?

• Eliminate all work and take more time

• Do less work and take more time

• Do more work and take more time

• Do less work and take less time

If I put 200J of work to lift an object in 2 seconds, how powerful am I?

• 400W

• 0.01W

• 100W

You are on a bus traveling 10 m/s west. You walk towards the front of the bus at 1 m/s west. What is your resultant velocity?

• 11 m/s west

• 9 m/s west

• 11 m/s

• 9 m/s

Sue drops her skateboard into a bowl speeding up from 0 m/s to 4 m/s in 2.5 s. What is her average acceleration?

• 4 m/s

• 1.6 m/s

• 1.6 m/s/s

• 2.5 m/s/s

How much power does a crane lifting 100N a distance of 15m in 3.0 seconds need to generate?

• 500W

• 1500W

• 0.002W

• 33.33W

Tags

NGSS.MS-PS3-5

A change in velocity over time is also known as________.

• momentum

• inertia

• force

• acceleration

Tags

NGSS.MS-PS2-2