A body is falling from a height h . After it has fallen a height h 2 , it will possess

Half potential and half kinetic energy

More kinetic and less potential energy

EASY

Earn 100

A toy car is travelling at $50 k m / h r$ . Child puts on the brakes when he wants to stop. The coefficient of friction between the tires and the floor is $μ = 0.60$ . What is the stopping distance of the car?

Important Questions on Potential Energy, Kinetic Energy and Gravity

EASY

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

A marble P of mass m lies at rest on the edge of a perfectly horizontal surface of a table of height h, as shown in the figure. A second identical marble Q having same mass moving at a speed u strikes it perfectly elastically. The speed acquired by marble P after the collision is (In an elastic collision, momentum as well as kinetic energy are conserved)
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MEDIUM

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

From a building two balls

A

B

are thrown such that

A

is thrown upwards and

B

downwards (both vertically). If

v_{A}

and

v_{B}

are their respective velocities on reaching the ground, then

EASY

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

Total energy of an isolated system-

MEDIUM

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

An aeroplane flying at a height of

50 km

has _____.

EASY

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

An object is dropped from a certain distance when she is at half distance she is ______ in it?

EASY

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

The sum of kinetic and potential energy is called :

MEDIUM

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

Kinetic energy and potential energy together form

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Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

The total energy of an object falling freely towards the ground _____.

(Choose from: decreases, remains unchanged, increases, increases in the beginning and then decreases)

EASY

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

The energy possessed by an oscillating pendulum of a clock is _____.

EASY

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

Choose the odd one out giving reason.

EASY

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

A toy car has a kinetic energy of

10 J

. It rolls up a slope and at the top it has

3 J

of gravitational potential energy and

5 J

of kinetic energy. How much energy has the car lost through friction?

EASY

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

A ball is thrown vertically up with a velocity

20 \frac{m}{s}

. At what height will its kinetic energy be half its original value?

EASY

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

The P.E. of a body at a certain height is $200 J .$ The kinetic energy possessed by it when it just touches the surface of the earth is _____.

EASY

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

An object is falling freely from a height

x

. After it has fallen a height

\frac{x}{2}

, it will possess:

MEDIUM

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

A graph of the total energy of a freely falling body from a height is:

MEDIUM

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

A mass

m

is used to compress a spring fixed on a high-rise platform. Then
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EASY

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

The sum of the potential and kinetic energies of a body is called _____ energy.

EASY

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

The total energy of an object remain _____.

EASY

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

A body is falling from a height

h

. After it has fallen a height

\frac{h}{2}

, it will possess

MEDIUM

Physical and Earth Science>Change>Potential Energy, Kinetic Energy and Gravity>Conservation of Energy

Consider the following statements and select the correct option which identifies true $(T)$ and false $(F)$ .

(i) When a body thrown up, its kinetic energy gradually changes into potential energy.
(ii) When a body falls down from a certain height, its potential energy remains the same.
(iii) If two unequal masses have the same momentum, then the heavier body possesses lesser kinetic energy.

	(i)	(ii)	(iii)
(A)	$T$	$F$	$T$
(B)	$F$	$T$	$F$
(C)	$T$	$T$	$F$
(D)	$F$	$F$	$T$

A toy car is travelling at 50 km/hr. Child puts on the brakes when he wants to stop. The coefficient of friction between the tires and the floor is μ=0.60. What is the stopping distance of the car?

Important Questions on Potential Energy, Kinetic Energy and Gravity

Learn and Prepare for any exam you want !

A toy car is travelling at $50 k m / h r$ . Child puts on the brakes when he wants to stop. The coefficient of friction between the tires and the floor is $μ = 0.60$ . What is the stopping distance of the car?