Problem 1: A student of mass m = 72 kg runs at a velocity vi = 1.53 m/s before jumping on a skateboard that is initially at rest. After jumping on the board the student has a velocity vf = 1.43 m/s. 33% Part (a) Write an expression for the weight of the skateboard W in terms of the mass of the student m, the student's initial velocity vi, the final velocity of the student and board vf, and the acceleration due to gravity g. W = ( ( ( m vi )/vf ) - m ) g ✔ Correct!
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Problem 1: A student of mass m = 72 kg runs at a velocity vi = 1.53 m/s before jumping on a skateboard that is initially at rest. After jumping on the board the student has a velocity vf = 1.43 m/s. |
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