Question

A particle moving with a velocity equal to 0.4 ms- is subjected to an acceleration of 0.15 ms-2
for 2 seconds in a direction at right angles to the direction of motion. The magnitude of the final
velocity is
1) 0.3 ms.
2) 0.4 ms
3) 0.5 ms -1
4) 0.7 ms
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Answer 1

Answer:

so the answer is 0•5 m/s