Physics
Grade-6
Easy
Question
If a body has velocity 10 m/s and a mass 4 kg, find the kinetic energy of the body
- 60
- 80
- 90
- 100
Hint:
KE=
The correct answer is: 80
-
KE= 1/2 mv2
Where:
- KE = kinetic energy
- m = mass of a body
- v = velocity of a body
- so K.E= 1/ mv2 = 1/2
(10)2 = 200 kgm/s
KE= 1/2 mv2
- KE = kinetic energy
- m = mass of a body
- v = velocity of a body
- so K.E= 1/ mv2 = 1/2(10)2 = 200 kgm/s
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