A particle of mass 70 g, moving at 50 cm `s^(-1)`, is acted upon by a variable force opposite to its direction of motion. The force F is shown as a function of time. After the force stops acting, the particle moves with a speed of
A
50 cm `s^(-1)` in reverse direction
B
100 cm `s^(-1)` in reverse direction
C
150 cm `s^(-1)` in original direction
D
100 cm `s^(-1)` in original direction.
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The correct Answer is:
A
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