Physics Work Problems Review

A box is dragged across a floor for a distance of 10 meters by a force of 50 N that is applied at an angle of 30 degrees with the horizontal. How much work is done on the box?

• 250 J

• 433 J

• 500 J

• 250√3 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

If a person lifts a 20 kg object vertically upwards by 2 meters, how much work is done against gravity? (Assume g = 9.8 m/s²)

• 392 J

• 196 J

• 40 J

• 20 J

Tags

NGSS.HS-PS2-4

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

Tags

NGSS.HS-PS3-1

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-PS3-1

If a force of 15 N is applied to push a box but the box remains stationary, how much work is done on the box?

• 15 J

• 0 J

• Cannot be determined without distance

• Depends on the time the force is applied

A person pushes a wall with a force of 100 N but fails to move it. What is the work done by the person on the wall?

• 100 J

• 0 J

• Depends on how long the person pushes

• Cannot be determined without knowing the mass of the wall

How much work is done when a force of 25 N is applied to move a box 5 meters across a frictionless surface?

• 5 J

• 25 J

• 125 J

• 0 J

A crane lifts a 500 kg load to a height of 10 meters. How much work is done by the crane? (Assume g = 9.8 m/s²)

• 49,000 J

• 5,000 J

• 9,800 J

• 50,000 J

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-1

What is the work done by gravity when a ball is dropped from a height of 20 meters and hits the ground? (Assume the mass of the ball is 2 kg and g = 9.8 m/s²)

• 196 J

• 392 J

• 0 J

• 20 J

Tags

NGSS.HS-PS2-4