A cheetah has 5 joules of kinetic energy and runs up a 5 m hill. When it gets to the top of the hill, it stops. What is the PE of the cheetah?

A 8.00 kg bowling ball falls froma 3.50 m shelf. Just before hitting the floor, what will be its kinetic energy? (g=9.80 m/s2 and assume air resistance is negligable).

A roller coaster starts with a speed of 4.1 m/s at a point 51 m above the bottom of a dip. Neglecting friction, what wil be the speed of the roller coaster at the top of the next slope, which is 30 m above the bottom of the dip? Answer: m/s

Question 7/8

they asked us to use conservation of mechanical energy concepts for this question

I drive a Nissan Leaf to work. With the e-pedal on, the motor recovers energy through braking very aggressively. I need about 7 KW-hour to come to school if I use mostly the freeways. That’s about 5 KW-hour if I take mostly local streets. From the energy perspective, can you offer an explanation to explain this difference?

A 10.0 kg bowling ball falls from a 5.0 m shelf. Just before hitting the floor, what will be its kinetic energy? (g = 9.80 m/s2 and assume air resistance is negligible)

Please use the information in the picture to answer the question: How fast must it have leapt from the water to reach a such a great height and speed. If you stand at the bow where you can reach up to a height of 3m above the water. You can only catch a fish if it is traveling under 8.5m/s when it reaches you. Will you be able to catch the fish? Find the speed of the fish at your location. Hint: use energy conservation.

A railroad locomotive accelerates a 95,000-kg railcar from 10 m/s to 25 m/s in 90 seconds. What was the average power transferred to the boxcar during this process? 25 MW 280 kW 330 kW 2.3 MW 48 kW

A 58 kg skier is coasting up the hill shown below with speed vi = 10 m/s. ΚΕ Number m/s. Figure 7.37 The skier's initial kinetic energy is partially used in coasting to the top of a rise. What is the final speed on top of the rise assuming that there is no friction acting? 35° m. V = ? Instead, assume that friction acts only on the straight line part of the rise and that the coefficient of friction is 0.24. 2.5 m What is the length of the straight line part of the rise? Number N. What is the normal force acting on skier during the straight line part of the rise? Number m/s. What is the final speed on top of the rise assuming that friction acts only during the straight line part? Number