The forces which changes the velocity
of a 200gm mass from 36 kmph to
180 kmph in o.2 sec
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Answer:
40N
Explanation:
we know that,
v = u+ at
180 × 1000/3600 = 36 × 1000/3600 + a× 0.2
50 = 10 + a× 0.2
a = 200 m/s^2 [ km/hr= 1000/3600 m/s ]
Now, F = m × a
= 200/1000 kg × 200 m/s^2
= 40 Kg m/s^2
= 40 N. [ gm = 1/1000 Kg ]
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