7.C.2 There are two slides at the park between which you are deciding. Both star

Question

7.C.2 There are two slides at the park between which you are deciding. Both start (1.00) at a height of 6 m. One is short and steep while the other is long and shallow If both slides are frictionless, which one should you choose if you want to be moving as fast as possible at the bottom? x Short and steep v(17 submissions used) Save 7.C.2Submit 7.C.2 7.C.3 Askydiver jumps out of a plane. Does the mechanical energy of the jumper (1.00) change while she is falling? Ignore the effects of air resistance O Yes O No (0/1 submissions used) Save 7.C.3Submit 7.C.3 7.C.5 Two boxes of the same mass are lifted to the same height. Does it (1.00) necessarily take the same amount of power to lift each box? O Yes O No (0/1 submissions used) Save 7.C.5 Submit 7.C.5

Explanation / Answer

7C2] Both will provide same speed at bottom, by conservation of energy.

7C3] No, Mechanical enegy is conserved as it is sum of kinetic and potential energy

7C4] No, energy will be same but not power. Power depends on time taken to do so.

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