If air resistance is neglected, how long will it take for an object falling from rest to reach a speed of 100m/s ?
(A) 1s.
(B) 10s.
(C) 20s.
(D) 100s.
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What this question is about
If air resistance is neglected, how long will it take for an object falling from rest to reach a speed of 100m/s ?
(A) 1s. --- No.
It would only be going 10m/s.
Questions
What this question is about
If air resistance is neglected, how long will it take for an object falling from rest to reach a speed of 100m/s ?
(B) 10 s. --- Yes.
It would gain 10m/s each second
--- 10 x 10 = 100.
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What this question is about
If air resistance is neglected, how long will it take for an object falling from rest to reach a speed of 100m/s ?
(C) 20s. --- No.
It would then be going 20 x 10 or 200m/s.
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What this question is about
If air resistance is neglected, how long will it take for an object falling from rest to reach a speed of 100m/s ?
(D) 100 s. --- No.
It would then be going 1000m/s.
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What this question is about