work

what is the unit of work?

• Newton

• Joule

• Watt

• meter

if you push a cart with a force of 60 N for 2 m... how much work have you done

• 120 J

• 30 J

• 120 N

• 30 N

Two people shove on a wall with 100 N. The wall doesn’t move. How much work is done?

• 100J

• 100N

• 0J

• 0N

Ahmed is out with his friends. Misfortune occurs and Ahmed and his friends find themselves getting a workout. They apply a cumulative force of 1000 N to push the car 200 m out of the sand. Determine the work done on the car.

• 2 x 10⁵ J

• 2.70 x 10⁴ J

• 3.2 x 10^-4 J

• 3.54 x 10⁵ J

Calculate work: A 100 Newton force is applied to move a 15 kg object a distance of 5 meters?

• 20 Joules
• 75 Joules
• 500 Joules
• 1500 J

Force is a _____ or _______

• simple    complex
• push     pull
• up      down
• in      out

If Jay Loppy pushes his van 20 meters how much work is done?

• 2,000J

• 40,000J

• 10,000J

• 800,000J

When is work done on an object?

• When an object has a net force applied to it.

• When an object moves while a net force is being applied to it

• When an object doesn't move while a net force is applied to it

• When an object is moving without a net force being applied to it

When the weightlifter holds the weight above his head he may get incredibly tired, ...

• He is getting tired because he is doing work on the barbell of weights

• He is getting tired because his muscles are stretching and squeezing to do work on the barbell of weights

• He is now the equivalent of a table with weights on it.

• He is getting tired because his muscles are stretching and squeezing, but he is not doing work on the barbell of weights

If you apply 50 N of work to move something 2 meters, how much work did you do?

• 25 J

• 100 J

• 0.04 J

• 50 J