A cheetah can accelerate from rest to 6.4 m/s (about 16 m/h) in 1.2 seconds. How much average power does the cheetah generate during the acceleration phase of its motion if its mass is 51 kg? a) 1200 W. b) 1300 W. C) 1600 W. d) 2100 W. e) 2500 W.

17. The kinetic energy of an 1800-kg truck is 7.2 x 105 J. What is the speed of the truck? A) 25 m/s B) 33 m/s C) 28 m/s 17 m/s E) 21 m/s

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A cheetah can accelerate from rest to 7.4 m/s (about 17 m/h) in 1.1 seconds. How much average power does the cheetah generate during the acceleration phase of its motion if its mass is 51 kg? a) 1300 W. b) 1500 W. c) 1900 W. d) 2200 W. e) 2600 W.

A playground slide has a height of 4.5m amd is frictionless. A 30 kg child pushes off from the top of the slide so that they have a speed of 5.5 m/s at the fop of Hhe slide. a) What's the child's speed at the bottom of the slide? b) After the bottom of the slide, child skids along a rough patch of ground If the rough patch is 2.2 m the friction an the child when they veach the end of the rough patoh? c) Imagine the playgronnd had a spring (K= 755 N/m) at the end of the patch. If the child were to collide, how muuh wonla they Compress before returning to rest? that has a coefficient of friction Mk= 2.5 long, how mnch work is done by

1480 kg car accelerates uniformly from a position of rest to a speed of 95 km/h in 6.0 s. a) Calculate the car's acceleration. b) How far did the car travel during this acceleration?  b) How much work was done by the car during this 6.0 s?

An elevator car (shown in the figure below) has a mass of 2000 kg and is carrying passengers having a combined mass of 500 kg. A constant friction force of 2000 N retards its motion. How much power must a motor deliver to lift the elevator car and its passengers at a constant speed of 3.00 m/s? (g= 10 m/s) Motor O a. 81 kW O b. 108 kW O c. 54 kW O d. 27 kW