Work Physics

what is the two things that need to occur for work to have been done?

• force and movement

• movement and direction

• constant force and power

• power and work

Work is

• having a job

• movement

• energy transfer

• energy transfer to an object

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The ( ) the force the ( ) work is done

• less, more

• smaller, more

• bigger, more

• bigger, less

if something is shifted a long way then there is ( ) work is being done

• less

• more

• same

• none

A bulldozer does 30,000 J of work over a distance of 20 meters. How much force did it apply?

• 1500 N

• 2000 N

• 1000 N

• 2500 N

Answer explanation

To calculate force, use the formula: Force = Work / Distance. Therefore, Force = 30,000 J / 20 m = 1500 N. The correct answer is 1500 N.

A 16 N force is applied to an object and 96 J of work is done. How far was the object moved?

• 6 m

• 16 m 

• 80 m 

• 1536 m 

A 10 kg mass is lifted to 3 m. What is its weight? What is its potential energy? How much work is being done?

• Weight = 30 N

  PE = 30 J

  Work = 294 J

• Weight = 10 kg

  PE = 10 J

  Work = 30 J

• Weight = 98 N

  PE = 294 J

  Work = 294 J

• Weight = 98 N

  PE = 294 J

  Work = 30 J

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-4

How much work is produced when 350 N is used to move a car 5 m (W=Fd)?

• 70 J

• 1750 J

• 355 J

• 175 J

A 5000N block is lifted 10 m. Calculate the work done.

• 50000 J

• 5000 J

• 500 J

• 50 J

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

How much force is used when 350 J is produced to move a car 5 m?

• 70 N

• 17500 N

• 355 N

• 175 N