Questions:
1.Describe the different forms of energy.
2.Differentiate between P.E and K.E
Conservation of energy
Questions(Higher order level)
1.A man drops a 10kg rock from the top of a ladder 5m vertical height.What is its kinetic energy when it reaches the ground?What is its speed just before it hits the ground?
2.A car of mass 1000kg and travelling at 30m/s stops at a distance of 50m is decelerating uniformly within 3.3sec.
a)What is the force exerted on it by the brakes.?
b)What is the work done by the brakes?.
3.A car is moving with uniform velocity of 54km/h.What is the K.E of mass 40kg sitting in the car.?
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