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Force and Laws of Motion
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31/10/2021 7:02 pm
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A body of mass 2 kg is at rest. What should be the magnitude of force which will make the body move with a speed of 30 m/s at the end of 1 s?
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31/10/2021 7:04 pm
Mass of the body = 2kg
Initial velocity u = 0
Final velocity v = 30 m/s
Time t = 1 s
Acceleration a = \(\frac{v - u}{t}\)
= \(\frac{30 - 0}{1}\) = 30 m/s2
Force = m x a
= 2 x 30 = 60 N