Work and KE

What is the work done by a force of 10 N moving an object 3 meters in the direction of the force?

• 30 J

• 10 J

• 3 J

• 0 J

A force acts on an object but the object does not move. How much work is done by the force?

• Equal to the force

• Equal to the mass of the object

• Cannot be determined

• 0 J

A car applies a force of 600 N to move a distance of 200 meters. How much work is done by the car?

• 120,000 J

• 300 J

• 1,200 J

• 3,000 J

Tags

NGSS.HS-PS3-2

In which of the following scenarios is work being done, according to the physics definition?

• Solving an equation

• lifting up a book

• holding a barbell above your head

• keeping a bike from falling as it rolls along a sidewalk

What has to happen when a force is exerted on an object for work to be done?

• the object moves
• the object stays still
• the object is heavy
• none of these

How do we express the total amount of energy a moving object has?

• KE x PE
• KE + PE
• KE - PE
• KE / PE

Tags

NGSS.HS-PS3-2

What is the kinetic energy of a ball sitting on top of a hill?

• 0 J
• less than 0 J
• more than 0 J

Tags

NGSS.HS-PS3-2

How do you calculate power?

• P = W/t
• P = E/t
• P = w * t
• P = bbq/chicken

What is the KE of an object that has a mass of 480 kg and a velocity of 80 m/s?

*USE CALCULATOR

• 1,650,223 Joules

• 1,536,000 Joules

• 1,444,678 Joules

What is the formula for kinetic energy?

Tags

NGSS.HS-PS3-2

NGSS.HS-PS2-1

NGSS.HS-PS3-1