Rankers Physics
Topic: Laws of Motion
Subtopic: Linear Momentum and Second Law of Motion

A particle is moving with a constant speed along a straight line path. A force is not required to
increase its speed
decrease its momentum
change the direction
keep it moving with uniform velocity

Solution:

As the particle moves with constant speed in straight line its velocity is constant i.e accleration is zero. From Newton's second law of motion

F=m.a

Force required to keep moving with uniform velocity is zero.

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