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4A ball, initially rolling at 2.0m/s, rolls down a frictionless hill in 6.0s. At the bottom of thehill, the ball has a final velocity of 7.0 m/s. It then rolls on a flat, frictionless surface and falls offof an 80m cliff into a lake. Determinea.b.The height of the hill.The speed of impact with the lake

Respuesta :

ANSWER:

STEP-BY-STEP EXPLANATION:

Given:

Initial velocity (u) = 2 m/s

Final velocity (v) = 7 m/s

Time (t) = 6 s

We can determine the height, using the following formula:

[tex][/tex]

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