1. Chapter 7 Centripetal Acceleration Ac= Vt2 / R Centripetal Force
Fc=MVt2 / R
Newton's law of universal Gravitation
Fg=G((M1xM2)/R2
Period and speed of an object in circular motion
Torque

2. Centripetal Acceleration
The color enchanced image of venus shown here was compiled from data taken by Magellan, the first Planetary spacecraft to be launched from a space shuttle. During

3. Centripetal Force
A pilot is flying a small plane as 56.6m/s in a circular path with a radius of 188.5m. The Centripetal force needed to maintain the plane circular motion is 1.89 x 104N. What is the planes mass?

4. Gravitational Force
Find the distance between a kg Billiard ball and a kg Billiard ball if the magnitude of the gravitational force between them is 8.92x10-11N.

6. Period and Speed of an orbiting obeject
The color-enhanced image of Venus shown here was compiled from data taken by Magellan , the first planetary spacecraft to be launched from a space shuttle. During the spacecraft’s fifth orbit around Venus, Magellan traveled at a mean altitude of 361 km. If the orbit had been circular, what would Magellan’s period and speed have been?

8. Torque
A basketball is being pushed by two players during tip-off. One player exerts an upward force of 15 N at a perpendicular distance of 14 cm from the axis of rotation. The second player applies a downward force of 11 N at a perpendicular distance of 7.0 cm from the axis of rotation. Find the net torque acting on the ball about its center of mass.

10. Chapter 6 Momentum Impulse Momentum Theorem Conservation Momentum
P=MV
Impulse Momentum Theorem
F∆T=∆P ∆P=MVf - MVi
Conservation Momentum
Perfectly Inelastic Collision

11. Chapter 6
Momentum and kinetic energy are conserved in an elastic collision

12. Momentum
A 2250kg pickup truck has a velocity of 25m/s to the east. What is the momentum

13. Force and Impulse
A 1400kg car moving westward with a velocity of 15m/s collides with utility pole and is brought to rest in .30s. Find the force exerted on the car during the collision.

14. Stopping distance
A 2240 kg car traveling to the west slows down uniformly from 20.0 m/s to 5.00 m/s. How long does it takethe car to decelerate if the force on the car is 8410 N to the east?How far does the car travel during the deceleration?

16. Conservation of Momentum
A 76 kg boater, initially at rest in astationary 45 kg boat, steps out of the boat and onto the dock.If the boater moves out of the boat with a velocity of 2.5 m/s tothe right, what is the final velocity of the boat?

18. Perfectly Inelastic Collisions
A 1850 kg luxury sedan stopped at a traffic light is struck from the rear by a compact car with a mass of 975 kg. The two cars become entangled as a result of the collision. If the compact car was moving at a velocity of 22.0 m/s to the north before the collision, what is the velocity of the entangled massafter the collision?

19. Kinetic Energy in perfectly inelastic Collisions

20. Two clay balls collide head-on in a perfectly inelastic collision
Two clay balls collide head-on in a perfectly inelastic collision. The first ball has a mass of kg and an initial velocity of 4.00 m/s to the right. The second ball has a mass of kg and an initial velocity of 3.00 m/s to the left. What is the decrease in kinetic energy during the collision?

23. Elastic Collision
A kg marble moving to the right at m/s makes an elastic head-on collision with a kg shooter marble moving to the left at m/s. After the collision, the smaller marble moves to the left at m/s. Assume that neither marble rotates before or after the collision and that both marbles are moving on a frictionless surface. What is the velocity of the kg marble after the collision?

26. Chapter 5 Work Worknet Kinetic energy
W=Fd W=Fdcos
Worknet
Wnet=Fnetdcos
Kinetic energy
KE=1/2VMV2
Worknet = change in kinetic energy
Gravitational potential Energy
PEg=mgh

27. Chapter 5 Elastic potential Energy Conservation of mechanical Energy
Peelastic=1/2kx2 (K is spring constant and X is stretched or distance compressed)
Conservation of mechanical Energy
Power
P=W/∆T
Power alternative form
P=Fv

28. Work
How much work is done on a vacuum cleaner pulled 3.0 m by a force of 50.0 N at an angle of 30.0° above the horizontal?

29. Kinetic Energy
A 7.00 kg bowling ball moves at 3.00 m/s. How fast must a 2.45 g table-tennis ball move in order to have then same kinetic energy as the bowling ball? Is this speed reasonable for a table-tennis ball in play?

31. Work-Kinetic Energy theorem
On a frozen pond, a person kicks a 10.0 kg sled, giving it an initial speed of 2.2 m/s. How far does the sled move if the coefficient of kinetic friction between the sled and the ice is 0.10?

33. Potential Energy
A 70.0 kg stuntman is attached to a bungee cord with an unstretched length of 15.0 m. He jumps off a bridge spanning a river from a height of 50.0 m. When he finally stops, the cord has a stretched length of 44.0 m. Treat the stuntman as a point mass, and disregard the weight of the bungee cord. Assuming the spring constant of the bungee cord is 71.8 N/m, what is the total potential energy relative to the water when the man stops falling?

36. Conservation of mechanical energy
Starting from rest, a child zooms down a frictionless slide from an initial height of 3.00 m. What is her speed at the bottom of the slide? Assume she has a mass of 25.0 kg.

39. Power
A 193 kg curtain needs to be raised 7.5 m, at constant speed, in as close to 5.0 s as possible. The power ratings for three motors are listed as 1.0 kW, 3.5 kW, and 5.5 kW. Which motor is best for the job?