A body accelerates uniformly from rest at 2ms-2. Calculate the magnitude of its velocity after travelling 9m
-
A.
4.5 ms-1 -
B.
6.0ms-1 -
C.
18.0-1 -
D.
36.0-1
Correct Answer: Option B
Explanation
v = (sqrt{U^2} + 2as = sqrt{0^2} + 2 times 2 times 9 = 6)m/s