1. A mass of 10kg sits at rest on an incline making an angle of 37 degrees to the horizontal. If us= 0.8 what is the friction force on the block? ( keep 2 sig figs)

- 59 N

-55 N

-41 N

-78 N

-63 N

2. If a 1kg egg initially moving with velocity of 4m/s comes to stop due to a -10M force. what is the impulse delivered to the egg?

-40 kg m/s

- 40 kg m/s

-4 kg m/s

4 kg m/s

3. Taylor is dragging her 50 kg suitcase to the luggage check in desk at the airport. She pulls on the strap with a force of 190 N T an angle of 35 degrees to the horizontal and move the suitcase 45m to the desk. determine the work done by Taylor on the suitcase

- 7 kj

- 300kJ

- 4.9 kJ

- 18 kJ

4. unable to lift the boc, adam pushes a box of books along floor. His force and position is shown in the graph. Find the work done by Adam if he moved the block for 20m.

- 1750 j

-1500 j

- 1000 j

- 1250 j

5. how much net work is done on a 2kg block of ice when it moved from rest to a speed of 4m/s?

-16 j

-32 j

-20j

-8 j

6. A 78kg skydiver has a speed of 62 m/s at an altitude of 870m above the ground. What is the potential energy of the skydiver.

-150kj

-4210kj

-529 kj

-666 kj

7. A 55Kg student is riding on an elevat or that accelerates downward at the rate of 2 m/s^2. if the person is standing on a bathroom scale what is the reading On the scale?

-0 N

-539 N

-430 N

-649 N

8. Alex makes a jump into a pool of water from a diving board which is 8m above the water. his velocity when he hits the surface of the water is -12.5 m/s. What is magnitude of the force if he comes to rest in 0.1s? Mass of Alex is 50 kg

- 3906 N

-625 N

-6250 N

-6.25 N