The kinetic energy of a body of mass 2 kg, which is moving with the constant velocity 5 m/sec, is .............
25 joules
The correct answer is option 1 i.e. 25 joules.
The formula gives the kinetic energy (KE) of a body:
KE = 1/2 mv2
Where:
-
m = mass of the object = 2 kg
-
v = velocity = 5 m/s
KE = 1/2 × 2 × 52 = 1×25 = 25 joules
So, the kinetic energy of the body is 25 joules.
This energy represents the energy of motion, and it remains constant since the velocity is constant.
Similar Questions
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The kinetic energy of a moving object is dependent on which of the following quantities:
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II) Energy can neither be created nor destroyed.
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Important Questions from Work and Energy
If a force ‘F’ acts on a body such that body gets displaced through the distance ‘x’ in the direction of the force, then the work done by the force is ____________.
The kinetic energy of a moving object is dependent on which of the following quantities:
i) Mass of the body
ii) Square of the velocity
iii) PressureWhich of the following statements refer/s to the law of conservation of energy?
Statements:
I) Energy can be converted from one form to another form of energy.
II) Energy can neither be created nor destroyed.
The work done in moving 10 coulomb charges across the potential difference of 5 volts is______.
- Mechanical energy is the sum of _______.
