If an air bag such as the one shown in the figure changes a 6.0 Times 10^1 kg pe

Question

If an air bag such as the one shown in the figure changes a 6.0 Times 10^1 kg person's speed from 40.0 m/s to 0.0 m/s, what impulse must act on the person? A 35.0 kg bumper car moving to the right at 6.50 m/s collides with a 40.0 kg bumper car moving to the right at 5.00 m/s. After the collision, the 35.0 kg bumper car is moving at 1.5 m/s to the right. How fast and in what direction is the 40.0 kg bumper car moving? An 55.0 kg fisherman jumps from a dock into a 150.0 kg boat at rest. If the speed of the fisherman is 3.80 m/s. what is the final speed of the fisherman boat? An electric motor lifts an elevator 14.0 m in 22.5 a by exerting an upward force of 1.75 Times 10^4 N. what power does the motor produce in kilowatts? The head of a 0.233 kg. golf club travelling 50.0 m/s strikes a 0.0460 kg. golf ball at rest on a tee. After hitting the golf ball the club continues in the same direction at 32.0 m/2. what is the velocity of the golf ball? A bike rider approaches a hill at a speed of 3.5 n/s. The mass of the bike and rider together is 77 kg. what is the initial kinetic energy of the system?

Explanation / Answer

37. (a)

38. (a)

39. (a)

40. (c)

41. (b)

42.(a)

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