A force of 20 N acts acts on an object of 4.0 kg mass that is initially at rest. What is the resulting acceleration of the objec
1 answer:
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Answer:
1.697s
Explanation:
We use the second equation of free fall under gravity as follows;
Since the ball fell freely, u = 0m/s, therefore equation (1) reduces to
Given that h is the total height the ball falls through in time t seconds.
However, according to the stated problem the ball falls halfway in 1.2s, this simply implies that the ball falls through a distance of in 1.2s. Hence we can write the following, given that
;
We can now proceed to find the time t for which it falls through h = 14.112m as follows;