question archive A ball starts rolling up a ramp from point A at 3

A ball starts rolling up a ramp from point A at 3

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A ball starts rolling up a ramp from point A at 3.5 m / s . Sometime later it is rolling down the ramp at 5.7 m / s and eventually lands 7.8 m down the ramp from its starting point of A .

a . What is the acceleration of the ball ?

b . How much time elapses during the ball's movement ?

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