Atrunk of mass 16 kg is on the floor. the trunk has a very small initial speed. the acceleration of gravity is 9.8 m/s 2 . what constant horizontal force pushing thetrunk is required to give it a velocity of 10 m/s in 20 s if the coefficient of sliding friction between the trunk and the floor is 0.57? answer in units of n.

F=96 N

Explanation:

First of all, we need to calculate the acceleration, that's given by:

the problem states that the initial velocity is very small, so we can assume it as zero, so:

according to Newton's second law:

if you already have the answer to (a), then just work out how many periods there are in 1 minute, and that's the answer to (c).

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