The Figure shows the velocity graph of a 6.5kg object as it moves along the x-ax

Question

The Figure shows the velocity graph of a 6.5kg object as it moves along the x-axis.

A) What is the net force acting on this object at t=1s?

B) What is the net force acting on this object at t=4s?

C) What is the net force acting on this object at t=7s?

Please help and explain how to get the answer?

The Figure shows the velocity graph of a 6.5kg object as it moves along the x-axis. A) What is the net force acting on this object at t=1s? B) What is the net force acting on this object at t=4s? C) What is the net force acting on this object at t=7s? Please help and explain how to get the answer?

Explanation / Answer

a)

F = m (dv/dt) = 6.5 * (12/3) = 26 N

b)

F = m (dv/dt) = 6.5 * (0) = 0 N

c)

F = m (dv/dt) = 6.5 * (-12/2) = -39 N

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