A body moving along a straight line at 30m/s undergoes an acceleration of -5second square after 2 seconds its speed will be:
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We know kinematics equationV(speed)=U(intial speed)+atHere a=-4m/s2 and t=2sSo,V=20+(-4)×2=20–8=12 m/s
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Answer:
30m/s
Explanation:
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