A particle is dropped from a height h . A constant horizontal velocity is given to particle. Taking

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5.Work, Energy, Power and Collision

medium

A particle is dropped from a height $h$. A constant horizontal velocity is given to the particle. Taking $g$ to be constant every where, kinetic energy $E$ of the particle w. r. t. time t is correctly shown in

Solution

(a)As particle is projected with some velocity therefore its initial kinetic energy will not be zero.
As it moves downward under gravity then its velocity increases with time $K.E. \propto v^2 \propto t2 \,(As\, v \propto t)$
So the graph between kinetic energy and time will be parabolic in nature.

Standard 11

Physics

A body of mass $2\, kg$ is thrown up vertically with K.E. of $490$ joules. If the acceleration due to gravity is $9.8$$m/{s^2}$, then the height at which the K.E. of the body becomes half its original value is given by ………… $\mathrm{m}$

medium

If work is positive, then kinetic energy increases or decreases ?

medium

particle is projected from level ground. Its kinetic energy $K$ changes due to gravity so $\frac{{{K_{\max }}}}{{{K_{\min }}}} = 9$. The ratio of the range to the maximum height attained during its flight is

hard

If kinetic energy of a body is increased by $300\%$ than percentage change in momentum will be

medium

(AIPMT-2002)

A block of mass $0.50\ kg$ is moving with a speedof $2.00$ $ms^{-1}$ on a smooth surface. It strikes another mass of $1.00\ kg$ and then they move together as a single body. The energy loss during the collision is …………. $\mathrm{J}$

medium

(AIEEE-2008)

A particle is dropped from a height $h$. A constant horizontal velocity is given to the particle. Taking $g$ to be constant every where, kinetic energy $E$ of the particle w. r. t. time t is correctly shown in

Solution

Similar Questions

A body of mass $2\, kg$ is thrown up vertically with K.E. of $490$ joules. If the acceleration due to gravity is $9.8$$m/{s^2}$, then the height at which the K.E. of the body becomes half its original value is given by ………… $\mathrm{m}$

If work is positive, then kinetic energy increases or decreases ?

particle is projected from level ground. Its kinetic energy $K$ changes due to gravity so $\frac{{{K_{\max }}}}{{{K_{\min }}}} = 9$. The ratio of the range to the maximum height attained during its flight is

If kinetic energy of a body is increased by $300\%$ than percentage change in momentum will be

A block of mass $0.50\ kg$ is moving with a speedof $2.00$ $ms^{-1}$ on a smooth surface. It strikes another mass of $1.00\ kg$ and then they move together as a single body. The energy loss during the collision is …………. $\mathrm{J}$

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