1. The Cartesian coordinates of a point on a circle are (2.5 m, 2.0m). What are the polar coordinates (r,) of this point?

2. Convert the following: a. 175 o = ________________rad b. 3/4 rad = ______________deg

3. You want to go around the merry-go-round 3.5 times. If the merry-go-round has a 5.0 m radius, how far did you travel?

4. A 1750 kg Indy car with a speed of 34 m/s goes around a level, circular track with a radius 1.5 km. What is the centripetal acceleration of the car? What is the centripetal force of the car?

5. A CD player spins 8750 rpm. If it starts from rest and has an acceleration of 425 r/s o , how long does it take to get to full speed?

6. A flywheel rotates with an angular speed of 25 rev/s. AS it is brought to rest with a constant acceleration, it turns 50 rev. What is the magnitude of the angular acceleration? How much time does it take to stop

7. In 1989, a cake with a mass of 58100 kg was baked in Alabama. Suppose cook stood 35.0 m from the cake. The gravitational force exerted between the cook and the cake was 4.5 x 10 -7N. What was the cook's mass?

8. Earth has an orbital period of 365 days and its mean distance from the Sun is 1.495x10 8 km Pluto's mean distance from the Sun is 5.896x10 9 km. Using Kepler's third law, calculate Pluto's orbital period in Earth days.

9. A force of 6.8 N is applied to a door at an angle of 50.0 o and a distance of 0.75 m from the hinge. What is the torque produced?