Question

A monkey accelerates uniformly for 2m starting from rest before jumping horizontally from the top of a 20m cliff. What is the minimum acceleration so that the monkey can clear a field of throny bushes stretching out 4m from the base of the cliff?

Step 1

Use the equation of motion to calculate the velocity at the instant that the monkey jumps.

Step 2

Use the equation of motion along the vertical to calculate the time taken by the monkey to reach the ground.

Step 3

When the monkey will jump, velocity at the instant that the monkey jumps will be its initial velocity along the horizontal.

Use the e...

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