Answer on Mechanics | Relativity Question for Tia
F(pulling) - F(friction) = 100[N] - 100[N] = 0[N].
According to the second Newton's law, the acceleration of an object has zero value:
a = F/m = 0/m = 0.
Therefore, speed of an object remains constant. So, 10 seconds later the speed of an object is 20 m/s.
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