Work Physics

You are playing kickball in gym. You kick the 0.5kg ball with enough force to cause it to travel at 4m/s. How much energy would the ball have at the peak of its movements?

• 19.6J

• 2J

• 4J

• 0.8J

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

You 80kg and your date 65kg decide to go to the park. The two of you decide to see who can get the highest on the swings. At the bottom of your swing you are 1m above the ground and are traveling 5m/s. How high is your peak in the swing?

• 2.28m

• 1.28m

• 1m

• 9.8m

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

Energy is ....

• Weird

• Destroyed during explosions

• Conserved

• Created under the right circumstances

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The space shuttle (RIP) used to be transported to its launch pad by a large mobile platform. If the platform holds up the space shuttle 4.5x10⁶kg while rolling 800m to the launch pad, how much work does it do in holding up the shuttle?

• More than 0 but less than 1x10⁵ J

• More than 1x10⁵J but less than 1x10⁷J

• More than 1x10⁷ J but less than 1x10⁹ J

• More than 1x10⁹ J

• 0 J

If you push as hard you can on an object, what are you putting onto it?

• distance

• work

• force

• time

Tags

NGSS.MS-PS2-2

Which is the equation for work?

• W = Fd

• W = Fa

• W = ma

• W = md

The product of the component of a force along the direction of a displacement and the magnitude of the displacement is called ....

• weight

• work

• gravity

• net force

The unit for work is ​ (a)  

• J

• kg

• m/s

• N

Tags

NGSS.MS-PS3-5

A person pulled a sled with a constant net horizontal force of 6 N and caused the sled to move through the field. How much work was done on the sled if it moved a distance of 2 km?

• 3 J

• 12 J

• 8 J

• 1.2 J

One of the Huskies basketball players lifted a set of weights a vertical distance of 2.0 m. If a constant net force of 250 N is exerted on the weights, what is the net work done on the weights? Use correct sig figs

• 500 J

• 5.0 x 10^2 N

• 5.0 x 10^2 J

• 5.0 x 10^3 J

Tags

NGSS.MS-PS2-2