Energy Unit Notes Quiz

What is the formula for calculating work?

• W = Fd

• W = F/t

• W = d/t

• W = F + d

Which of the following best defines power in physics?

• The rate at which energy is transferred

• The amount of force applied to an object

• The distance an object moves

• The mass of an object

If a box is pushed with a force of 350N for a distance of 8 meters, how much work is done?

• 2800 J

• 5600 J

• 933 J

• 400 W

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

What is the formula for calculating power?

• P = W/t

• P = Fd

• P = t/W

• P = F + d

If 2800 J of work is done in 5 seconds, what is the power used?

• 560 W

• 933 W

• 400 W

• 1120 W

If the same amount of work (2800 J) is done in less time (3 seconds), what happens to the power?

• It increases to 933 W

• It decreases to 400 W

• It stays the same

• It becomes 560 W

If the force applied to move the box is doubled to 700N, but the distance and time remain the same, what is the new power?

• 1120 W

• 560 W

• 933 W

• 400 W

Which of the following does NOT affect the amount of work done?

• Time

• Force

• Distance

• All of the above affect work

What is the formula for speed?

• s = d/t

• s = t/d

• s = v*t

• s = m*v

Tags

NGSS.HS-PS4-1

Which of the following best describes velocity?

• How far an object moves in a given period of time with a direction

• How fast an object moves without direction

• The change in velocity over time

• The mass of an object times its speed