Questions
An object of mass 5 kg is moving with a constant velocity of 10 m s-1. A constant force acts on it opposite to its velocity 4 seconds and gives it a velocity of 2 m s-1 in the opposite direction. The acceleration produced by the force is
detailed solution
Correct option is B
Using V = u + at, we can write −2=10+a×4⇒a=−3m/s2 (Retardation)∴ Acceleration produced =3 m/s2Talk to our academic expert!
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Statement I : The familiar equation mg = R for a body on a table is true only if the body is in equilibrium.
Statement II : The equality of mg and R has no connection with the third law.
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