**Work, Power and Energy Trivia Review Game**

**Round 1**

**Round 1 (30 second each, 1 point each)**

**Round 2**

60 seconds each, 2 points each

Round 3

120 seconds each, 3 points each

Round 4

150 seconds each, 5 points each

Round 5

240 seconds, 12 points

**Rules**

1. Write team name on top of answer sheet. 2 Students Per Team

**Name should Be School Appropriate**

2. You may only use your calculator, reference tables and scrap paper to answer the questions. Every student should be trying to answer the question on their own and then consult your group.

3. Record your answers on the provided answer sheet (Do not forget units!)

4. One (1) person from your group will bring up the answer key to the front to be checked when you have finished the entire game.

5. Each round the question difficulty will increase and the time to answer each question will also increase.

Round 1 30 seconds per question 1 Point Each

Round 2 60 seconds per question 2 Points Each

Round 3 120 seconds per question 3 Points Each

Round 4 150 seconds per question 5 Points Each

Round 5 240 seconds 12 Points

6. At the end of round 1-4, there will be an additional minute to finalize your answer sheet.

7. Make sure everyone on your team understands how to answer the problem.

8. Do not share answers with another team, there will be a prize at the end.

Question 1.1

Name three concepts that use Joules as a unit.

Question 1:2

Define Power

Question 1.3

Name all of the variables that effect the period of a pendulum.

Question 1.4

What does the spring constant represent?

Question 1.5

Give two examples of periodic motion.

Question 2.1

A horizontal force of 950 N is needed to drag a crate at a speed of 4.24 m/s. What power is developed by the person dragging the crate?

Question 2.2

A spring stretches by 0.16 m when some apples weighting 3.5 N are suspended from it. What is the spring constant of the spring?

Question 2.3

Calculate the period of a pendulum with a length of 75 cm on the moon where the gravitational field strength is 1.67 N/kg (or m/s2).

Question 2.4

How much gravitational potential energy does Randy, mass 75.0 kg, gain when he climbs a rope a vertical distance of 6.5 m?

Question 2.5

How much potential energy is stored in a spring with a spring constant of 32 N/m if it is stretched by 10 cm?

Question 3.1

A rope is used to pull a metal box 25 m across the floor. The rope is held at an angle of 26o with the floor and a force of 700N is used. How much work is done on the box?

Question 3.2

A pendulum bob with a mass of 0.65 kg swings to a maximum height of 1.5 m. What is the kinetic energy when the pendulum bob is at a height of 0.56 m?

Question 3.3

In the 1950’s an experimental train, which had a mass of 3.0 x 104 kg, was powered across a level track by a jet engine that applied a force of 6.0 x 105 N for a distance of 600m. What is the final velocity of the train if it started from rest?

Question 3.4

A 65.0 kg woman steps on an escalator. If the escalator has an incline of 28o and is 70 m long, how much work has the escalator done on the woman when she steps off?

Question 4.1

Calculate the potential energy stored in the spring when it is stretched 0.35 m using the Force vs. Elongation graph.

Question 4.2

The big hill on a roller-coaster ride is 101 m tall. If the mass of the roller coaster car and its two riders is 325 kg and the maximum velocity reached is 32 m/s. a) How much energy is lost to friction? b) What happens to this energy?

Question 5.1

On the graph provided, a) draw the gravitational potential energy (GPE) versus time for one complete swing, b) kinetic energy (KE) versus time for one complete swing, c) total mechanical energy versus time for one complete swing. Use different colors for each part and label each line on a key.