What Is Work

_ is what is done whenever a force makes an object move some distance.

• work

• force

• energy

_ is done whenever a force moves an object over some distance.

• force

• work

• energy

Tags

NGSS.MS-PS3-5

The amount of work you do depends on _ and _.

• how much force you use

• how far the object moves

• how tall you are

• how much you weigh

More _ is done when the same of force moves and object a greater distance.

• work

• power

A cyclist exerts a force of 100 N to move a bicycle 20 meters. Calculate the work done by the cyclist.

• 2000 J

• 1000 J

• 500 J

• 1500 J

Tags

DOK Level 2: Skill/Concept

Micheal was at the gym and he was trying to lift the weights, but he could not lift it. Finally Micheal decided to go home. The next day he complained to the trainer that he did all that hard work for nothing! The trainer asked the other trainers "did he really do any work?"

Michelle: "Yes, because Micheal was tired"

Jose: "No, because Micheal transformed his energy into nothing."

Emily: No, Because Micheal pulled and pushed but the weight did not move."

Who was right?

• Michelle

• Jose

• Emily

Answer explanation

Work is force moving an object. Since the object did not move then there was no work done.

Tags

NGSS.MS-PS3-5

If a force of 15 N is applied to move an object 3 meters, how much work is done?

• 45 J

• 5 J

• 30 J

• 50 J

Tags

DOK Level 2: Skill/Concept

Calculate the work done when a force of 10 N is applied to move an object 5 meters in the direction of the force.

• 15 J

• 50 J

• 5 J

• 100 J

Tags

DOK Level 2: Skill/Concept

If you try to move an object but you are not able to move it, work does not take place because you did not cause ____.​ (a)  

• change

• motion

• energy

Tags

NGSS.MS-PS3-5

The more _ you do, the more energy you need.

• work

• force