81. Which of the following contains potential energy?
82. Work known as-
83. What is the formula for finding the kinetic energy of an object?
84. What is the kinetic energy of a ball of mass 2kg moving at a speed of 30ms-1?
85. If the kinetic energy of an object becomes 256 times that of its initial value, then the new linear momentum will be?
86. Which type of energy is there in a stretched rubber band?
87. If the velocity of an object is twice that of its initial velocity, how many times will its kinetic energy increase?
88. When a repulsive force 'F' is applied in the opposite direction, the angle between the two directions will be-
89. The energy possessed by a body due to its change in position or shape is called-
90. A more powerful engine can do more work in less time like an aeroplane travel more distance as compare to a car in less time. So aeroplane is more powerful than a car. It is an example of which of the following ?
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