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Option a. The total force that is calculated is given as 24 n/s
<h3>How to solve for the magnitude</h3>
300 g = 0.3kg
Force = change in momentum / time
We have to find the mass x velocity
0.3 x 40 = 12kg m / s
This rubber ball is said to strike and also rebound immediately. We can take the time as 1 second.
Force 1 x 12
= 12 N
The force that is exerted after the rebounding has occurred is also 12 N following Newton's 3rd law.
The total force that is exerted would be calculated as 12N + 12N = 24 N/S
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The time she spent in contact with the trampoline is 0.1619 seconds.
The objective of this question is to determine for how long she is in contact with the trampoline?
The conservational force is exerted on the trampoline is equivalent to the sum of the potential energy at the highest point and the elastic energy at the lowest point.
∴
From the given information;





Using the Simple Harmonic Motion to determine the time at which she is in contact with the trampoline, we have;


where;


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