Chapter 4 – Motion in a Plane

Assertion : For angular projection when angle of projection θ = tan^-1(1) the horizontal range is four times the maximum height. Reason : The horizontal range of projectile is directly proportional to square of velocity and inversely proportional to acceleration due to gravity. 1. In a cricket match a batswoman hits a boundary 6 times [...]

ASSERTION Generally the path of a projectile from the earth is parabolic but it is elliptical for projectiles going to a very great height. REASON Up to ordinary height the projectile moves under a uniform gravitational force, but at great heights, projectile moves under a variable force. 1. In a cricket match a batswoman hits [...]

ASSERTION A body can have acceleration even if its velocity is zero at a given instant of time. REASON A body is momentarily at rest when it reverses its direction of motion. ASSERTION A body can have acceleration even if its velocity is zero at a given instant of time. REASON A body is momentarily [...]

A cyclist is moving on a circular track of radius 80 m with a velocity of 72 km/hr. He has to lean from he vertical approximately through an angle. A cyclist is moving on a circular track of radius 80 m with a velocity of 72 km/hr. He has to lean from he vertical approximately [...]

The position of a particle moving in the xy-plane at any time t is given by x=(3t^2 -6t) m , y=( t^2 -2t) m. Select the correct statement about the moving particle from following . a) The acceleration of the particle is zero at t=0 second b) The velocity of the particle is zero at [...]