An object has a mass of 5 kg. What force is needed to accelerate it at 6 m/s2? (Formula: F=ma)
2 answers:
Answer:
<h2>30 N.</h2>Explanation:
According to Newton's second law, a force applied to certain object will accelerate it, that's the meaning of the formula:
So, in this case, we don't have to analyse much, because all values are given, we just have to replace them and solve for F:
Therefore, the force needed to accelerate that mass is 30 N.
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Answer:
distance difference would a) increase
speed difference would f) stay the same
Explanation:
Let t be the time the 2nd skydiver takes to travel, since the first skydiver jumped first, his time would be t + Δt where Δt represent the duration between the the first skydiver and the 2nd one. Remember that as t progress (increases), Δt remain constant.
Their equations of motion for distance and velocities are
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So as time progress t increases, Δs would also increases, their distance becomes wider with time.
Similarly for their velocity difference
Since g and Δt both are constant, Δv would also remain constant, their difference in velocity remain the same.
This of this in this way: only the DIFFERENCE in speed stay the same, their own individual speed increases at same rate (due to same acceleration g). But the first skydiver is already at a faster speed (because he jumped first) when the 2nd one jumps. The 1st one would travel more distance compare to the 2nd one in a unit of time.