A particle moves with uniform acceleration along a straight line and describes distances 21m, 43m and 91m at times 2, 4 and 7 seconds, respectively.What is the velocity of the particle in 3 seconds?

A particle moves in a horizontal straight line under retardation kv³, where v is the velocity at time t and k is a positive constant. If initial velocity be u and x be the displacement at time,then which one is correct?

The distance x of a particle moving along a straight line from a fixed point on the line at time t after start is given by t = ax² + bx + c (a, b, c are positive constants). If v be the velocity of the particle and u(?0) be the initial velocity of the particle then which one is correct?

The distance s of a particle moving along a straight line from a fixed-pointO on the line at time t seconds after start is given by x = (t – 1)²(t – 2)². What will be the distance of the particle from O when its velocity is zero?

Which of the following force is the strongest force in nature?

Who is the Father of Experimental Physics?

Which branch of science deals with nature and natural phenomena?

Atomic and molecular phenomena are dealt with by

What are the steps of the scientific method?

Which of the following force is the weakest force in nature?

According to Einstein’s theory, mass and energy are related as