Class 11th

The velocity-time graph of a body moving in a straight line is shown in the figure. Find the distance travelled by the body in 6 seconds.

The kinetic energy of a body decreases by 36%. The decrease in linear momentum is

A particle of mass m is dropped from rest from a height h0 on a horizontal floor. The coefficient of restitution between the floor and particle is e. Maximum height attained by the particle after second collision is

. An automobile engine develops 10⁵ W power when rotating at an angular speed of 900 rad/minute. The instantaneous torque delivered by the engine is

Gravitational force between two point masses is found to be F when both are in vacuum. If both the masses are immersed in water, new gravitational force will be:

A ball is projected from ground with initial momentum p at an angle θ . What is the magnitude of net change in linear momentum when it reaches at maximum height of journey?

Equation of a standing wave is expressed as y = 2Asinωtcoskx. In this equation, quantity ω/k represents

Mercury does not wet glass because

Two non-zero vectors $\vec{A}$ and $\vec{B}$  are essentially perpendicular if

When an elevator is moving downward with a increasing speed, the apparent weight of a body inside elevator