Advertisements
Advertisements
प्रश्न
Calculate the kinetic energy of a body of mass 0.1 kg. and momentum 40kg m/s.
Advertisements
उत्तर
K.E. = `1/2`mv2 and momentum P = mv
Eliminating v, K.E. =`1/2"m"xx("P"/"m")="P"^2/(2"m")`
Given : P = 40 kg m/s, m = 0.1 Kg.
K.E. = `(40)^2/(2xx0.1)` = 8000 J = 8 × 103 J.
संबंधित प्रश्न
Name the process used for producing electricity using nuclear energy.
Two toy-cars A and B of masses 500 g and 200 g respectively are moving with the same speed. Which of the two has the greater kinetic energy?
A ball is made to fall freely from a height. State the kind/ kinds of energy possessed by the ball when it is at the ground.
State two advantages of using wind energy for generating electricity.
Renewable source of energy is:
Name the energy changes for the following:
bicycle brakes
Give three examples of bodies possessing potential energy.
A body of mass 0.2 kg falls from a height of 10 m to a height of 6 m above the ground. Find the loss in potential energy taking place in the body. [g = 10ms−2]
Geothermal energy is:
