The velocity of a freely falling body, starting at rest and after one second is ___.(Round your answer to the nearest integer ; Choose all that apply )
A
10 m/sec
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B
36 km/hr
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C
1 km/sec
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D
100 cm/sec
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Solution
The correct options are A 10 m/sec B 36 km/hr Any body in free fall is under acceleration due to gravity (g) and thus accelerates at 9.8m/s2. When a body starts from rest, after one second it will gain an acceleration of 9.8m/s2 and thus will be at a velocity of 9.8m/s in the downward direction. When rounded off to the nearest integer, the answer becomes 10.