List of top Physics Questions on Kinetic Energy

A body of mass 2 kg is moving with a velocity of 3 m/s. What is its kinetic energy?

A body moves in a circular path with constant speed. Its kinetic energy:

Earth has mass 8 times and radius 2 times that of a planet. If the escape velocity from the earth is 11.2 km/s, the escape velocity in km/s from the planet will be:

A particle of mass 2 kg moves at 3 m/s. Its kinetic energy is:

The velocity-time graph of an object moving along a straight line is shown in the figure. What is the distance covered by the object between $ t = 0 $ to $ t = 4s $?

The ratio of vapour densities of two gases at the same temperature is $ \frac{4}{25} $, then the ratio of r.m.s. velocities will be:

The kinetic energy of translation of the molecules in 50 g of CO$_2$ gas at 17°C is:

A bob of mass $m$ is suspended at a point $O$ by a light string of length $l$ and left to perform vertical motion (circular) as shown in the figure. Initially, by applying horizontal velocity $v_0$ at the point ‘A’, the string becomes slack when the bob reaches at the point ‘D’. The ratio of the kinetic energy of the bob at the points B and C is:

A satellite of mass 1000 kg is launched to revolve around the earth in an orbit at a height of 270 km from the earth's surface. Kinetic energy of the satellite in this orbit is ______ x $10^{10}$ J.
(Mass of earth = $6 \times 10^{24}$ kg, Radius of earth = $6.4 \times 10^6$ m, Gravitational constant = $6.67 \times 10^{-11}$ Nm$^2$ kg$^{-2}$)

A ball of mass 100 g is projected with velocity 20 m/s at $ 60^\circ $ with horizontal. The decrease in kinetic energy of the ball during the motion from point of projection to highest point is:

A concave mirror produces an image of an object such that the distance between the object and image is 20 cm. If the magnification of the image is $ -3 $, then the magnitude of the radius of curvature of the mirror is:

In a long glass tube, a mixture of two liquids A and B with refractive indices 1.3 and 1.4 respectively, forms a convex refractive meniscus towards A. If an object placed at 13 cm from the vertex of the meniscus in A forms an image with a magnification of $-2$, then the radius of curvature of the meniscus is:

A stationary particle breaks into two parts of masses $m_A$ and $m_B$, which move with velocities $v_A$ and $v_B$, respectively. The ratio of their kinetic energies ($K_B : K_A$) is:

An artillery of mass $M_1$, fires a shell of mass $M_2$. At the time of firing the ratio of kinetic energy is.

A uniform disc of mass $5$ $kg$ and radius $2$ $m$ is rotating with $10$ $rad/s$. Now another identical disc is gently placed on first disc. Because of friction both disc acquire common angular velocity. Loss of kinetic energy in process is ________J.

Four particles A, B, C, D of mass $\frac{m}{2}$, $m$, $2m$, $4m$ have the same momentum, respectively. The particle with maximum kinetic energy is:

When kinetic energy of a body becomes 36 times of its original value, the percentage increase in the momentum of the body will be

Two bodies of mass 4 g and 25 g are moving with equal kinetic energies. The ratio of the magnitude of their linear momentum is:

The total kinetic energy of 1 mole of oxygen at 27°C is :
[Use universal gas constant (R)= 8.31 J/mole K]

If the kinetic energy of a free electron doubles, its de-Broglie wavelength changes by the factor:

When light is incident on a metal surface, the maximum kinetic energy of emitted electrons:

The kinetic energy of a particle is 10000 joule with the mass 2kg. Find the momentum for the particle?

A body of mass $10 kg$ is moving with an initial speed of $20 m / s$ The body stops after $5 s$ due to friction between body and the floor The value of the coefficient of friction is: (Take acceleration due to gravity $g =10 ms ^{-2}$ )

The following statements are given :
(1) The average kinetic energy of a gas molecule decreases when the temperature is reduced
(2) The average kinetic energy of a gas molecule increases with increase in pressure at constant temperature
(3) The average kinetic energy of a gas molecule decreases with increases in volume
(4) Pressure of a gas increases with increase in temperature at constant pressure
(5) The volume of gas decreases with increase in temperature
Choose the correct answer from the options given below :

A stone is projected at an angle of $30\degree$ to the horizontal. The ratio of kinetic energy at projection to its kinetic energy at the highest point is: