Physics, asked by majotpandher1127, 11 months ago

Calculating mass when velocity and kinetic energy is given

Answers

Answered by Anonymous
9

KE=12mv2

Where:

KE = kinetic energy

m = mass of a body

v = velocity of a body

Kinetic Energy

Kinetic Energy is the energy an object has owing to its motion. In classical mechanics, kinetic energy (KE) is equal to half of an object's mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.

Answered by avijacker996
13

Answer:

Explanation: I explain it with an example.

a body has K.E 150j and moving with velocity 5m/s find mass(M) of the body.

We know  K.E = 1/2Mv'2

Now,  K.E= 150j  (given)

          v    = 5m/s(given)

Put the given value in formulae to obtain mass of that body

                     150j = 1/2*M*(5m/s)'2

                     150j = 1/2*M*25m'2/s'2

   by cross multiply

                     150*2j =25M*M'2/S'2

                     300kgm'2/s'2 = 25Mm'2/s'2

cancelling m'2/s'2 both side

Now,             300kg =25M

                     M= 300kg/25

                     M= 12kg

     

                 

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