A body accelerates uniformly from rest at 2ms−2. C...
A body accelerates uniformly from rest at 2ms−2. Calculate its velocity when it has travelled a distance of 9m.
3.0ms−1
4.5ms−1
6.0ms−1
18.0ms−1
Correct answer is C
Given that u=0ms−1,a=2ms−2,s=9m
We can use the equation, v2=u2+2as so that we have,
v2=02+2×2×9
v2=36;v=6.0ms−1
Note; u = Initial velocity
v = final velocity
a = acceleration
s = distance covered
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