Pumpkin Patch Physics!

Karen is carries a pumpkin from the field all the way to her car. What kind of work did she do?

• No work

• Positive Work

• Negative Work

Answer explanation

The force Karen is applying to carry the pumpkin is perpendicular to the direction she's moving in. The force is vertical and the displacement is horizontal meaning, no work!

Jose takes the pumpkin from Karen. Now he's carrying it, but sets it down on the ground to grab his car keys. What kind of work did he do?

• No work

• Positive Work

• Negative Work

Answer explanation

The force Jose is doing and the displacement are in opposite directions, but both are vertical! This means he did do work, but it's negative.

Tags

NGSS.MS-PS3-5

In physics, work is done when a (a)   acts on an object and causes the object to move over a distance.

The equation to solve for Work is:

• W= ma

• W= Fa

• W= Fd

• W= mg

A ghost pushes Jorge with a force of 5N so he travels a distance before falling in the same direction. Explain why the ghost did work.

Tags

NGSS.MS-PS2-1

The unit for work is a joule. 1 Joule is equal to:

• 1 newton-meter

• 2 newton-meters

• 1 Meter

• 1 Newton

Tags

NGSS.MS-PS3-4

It is important to know where the scalars are pointing to know what kind of work is being done.

• True!

• False!

Answer explanation

Force and displacement are vector quantities, not scalars. Vectors give us magnitude and direction. 

Tags

NGSS.MS-PS3-4

Mr. Skeleton wants to know: What does it mean if an object does not move (d=0)?

Tags

NGSS.MS-PS2-2

Do you liked haunted houses? 

• Yes, i like getting scared

• Not really, but i'll go anyway

• No!! I hold everyone's stuff while they go in 

Ana pulls a 10N wagon full of pumpkins and walks for 20 meters. What kind of work is she doing?

• No work

• Positive work

• Negative work