Laws of MotionHard

Question

A body is moving with a speed of 1 m/s and a force F is needed to stop it in a distance x. If the speed of the body is 3 m/s the force needed to stop it in the same distance x will be

Options

A.1.5 F
B.3 F
C.6 F
D.9 F

Solution

            
x =                       
O2 = 32 +          0 = 9 +         ⇒    F1 = 9F

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