Question

The acceleration of an object is said to be uniform acceleration if its velocity changes by equal amount in equal interval of time, however small these time intervals may be. A particle is moving with uniform acceleration in x-direction, the displacement x of particle varies with time t as x = 4t2-15t+25 m

ASSERTION: A body can have acceleration even if its velocity is zero at that instant of time. REASON: The body will be momentarily at rest when reverses its direction of motion

A body is moving in a straight line and begins to slow down gradually. In such a situation: (a) Identify the condition of motion. (b) State the directions of velocity and acceleration vectors. (c) Justify your answer with a suitable real-life example

A car moving along a straight highway with a speed of 126 km h⁻¹ is brought to a stop within a distance of 200 m. What is the retardation of the car (assumed uniform), and how long does it take for the car to stop?