Review Game Eurrrreeeekkkaaa!

Get a board, marker, and a wipey thing . . .

No partners today

A toy figure is situated on A toy figure is situated on top of a spring and is top of a spring and is squished into a boxsquished into a box

The spring is compressed The spring is compressed 0.5-m by a force of 2-N0.5-m by a force of 2-N

1.1. What is the elongation (x) of the spring?What is the elongation (x) of the spring?

2.2. What is the elongation constant of the What is the elongation constant of the spring?spring?

3.3. What is the PE of the compressed spring?What is the PE of the compressed spring?

4.4. If m=3 kg, how high will it jump?If m=3 kg, how high will it jump?

5.5. First hand up . . .First hand up . . .Explain what is Explain what is

happening.happening.

6. What will happen to the 6. What will happen to the velocity of the big fish?velocity of the big fish?

The little fish?The little fish?

7. A 801-N car is traveling 7. A 801-N car is traveling at 2.02 m/s.at 2.02 m/s.

What is its momentum?What is its momentum?

8. If the momentum is 165.1-8. If the momentum is 165.1-kgm/s and it hits another car kgm/s and it hits another car

. . . . . . How much force was exertedHow much force was exerted(the at rest car took 0.1-sec (the at rest car took 0.1-sec

to stop the other car)to stop the other car)

9. If the force needed to stop 9. If the force needed to stop the car is 1651-N, what is the car is 1651-N, what is

the force on the 712-N driver the force on the 712-N driver applied by the seatbelt?applied by the seatbelt?

9.The graph that is about to 9.The graph that is about to be on the overhead shows be on the overhead shows

force vs. displacement.force vs. displacement.

9.What was the average work 9.What was the average work done in moving the block 3-m?done in moving the block 3-m?

10.A 30-N block is at rest at 10.A 30-N block is at rest at the bottom of a frictionless the bottom of a frictionless incline. How much work is incline. How much work is

done against gravity to done against gravity to move the block to the top of move the block to the top of

the incline?the incline?

11.How much potential 11.How much potential energy does the block have energy does the block have

at the top of the hill?at the top of the hill?

12. If the block has a mass 12. If the block has a mass of 10-kg, what will be it’s of 10-kg, what will be it’s maximum velocity at the maximum velocity at the

after it careens off the end after it careens off the end of the cliff? (ignore the x-of the cliff? (ignore the x-

direction)direction)

13. Car A and Car B are of 13. Car A and Car B are of equal mass and travel up a equal mass and travel up a hill. Car A moves up the hill. Car A moves up the

hill at a constant speed that hill at a constant speed that is twice the constant speed is twice the constant speed of car B. Compared to the of car B. Compared to the power developed by car B, power developed by car B,

the power of A is what?the power of A is what?1.1. The SameThe Same2.2. Twice as muchTwice as much3.3. Four times as muchFour times as much4.4. Half as muchHalf as much

14. A 1 kg bird flying 14. A 1 kg bird flying at 2 m/s is sucked at 2 m/s is sucked straight into the straight into the engine of a 10,000 engine of a 10,000 kg jumbo jet going kg jumbo jet going 100 m/s. The bird 100 m/s. The bird sticks to the inside of sticks to the inside of the engine, which the engine, which then bursts into then bursts into flames. As the flames. As the doomed plane begins doomed plane begins its descent, what is its descent, what is its momentum?its momentum?

Boom.Boom.

15.At what point does the 15.At what point does the cat have the most KE?cat have the most KE?

16.What are the 16.What are the fundamental units that fundamental units that

make up a Joule?make up a Joule?

Kg Kg mm22/s/s22

Kg Kg mm22/s/s33

17. What are the 17. What are the fundamental units that fundamental units that

make up a Watt?make up a Watt?

18. What is the spring 18. What is the spring constant of a spring that constant of a spring that

gains 6.0-J of PE as a result gains 6.0-J of PE as a result of being compressed 0.40-of being compressed 0.40-

m?m?

75-N/m75-N/m

The End work on your The End work on your homeworkhomework