Work and Power

work transfers

• sweat
• energy
• velocity
• effort

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

NGSS.HS-PS3-3

NGSS.HS-PS3-4

What is the formula for work?

• Force = work x distance
• Distance = force x work
• Work = force x distance
• Work = force x mass

_______________ is done when a force acts on an object and the object moves in the direction of the force.

• Work

• Kinetic energy

• Watt

• Joule

Tags

NGSS.HS-PS2-1

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

Tags

NGSS.HS-PS3-2

How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?

• 15 J
• 45 J
• 0 J
• 5 J

If I ask a student to push against the wall for 2 hours, but the wall never budges-not even an inch, is that work?

• Yes, because a force has been applied.

• No, because the wall has not moved.

Work is done on an object when the object moves in the SAME direction in which the force is applied.

• True
• False

A kid applies a force of 70 N to a ball over 1.1 meters. How much work did he do on the ball? 

• 77 J
• 7.7 J 
• 0.7 J 
• 770 J 

Which of these is a measure of force?

• 100 newtons
• 100 meters per second
• 100 joules
• 100 watts

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

units for work are

• newtons

• joules

• meters

• seconds