PLEASE HELP A child and sled with a combined mass of 55.7 kg slide down a frictionless hill that is 11.3 m high at an angle of 29 ◦ from horizontal. The acceleration of gravity is 9.81 m/s2.
If the sled starts from rest, what is its speed at the bottom of the hill?
Answer in units of m/s.
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Ответ:
Actually:
1 5/8 simplifies to 1.625. Do 5.8 and get 0.625 then add 1. Its 1.625. So 1.625/1.625=1. Its the same thing with mixed number. (1 5/8) / 1.625 = 1