A particle start moving with acceleration 2 m/s distance travel by it 5th second is
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Explanation:
s=ut+1/2at²
u=0m/s
a=2m/s
distance travelled in 4sec=1/2×a×t²
=1/2×2×4²
=16m
distance travelled in 5sec=1/2×2×5²
=25m
distance travelled in 5th sec=25-16=9m
shortcut formula
distance travelled in nth sec =u+a/2(2n-1)
=2/2(2×5-1)
=1×(10-1)
=9m
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