A steel ball of mass 5 kg is rolling over a frictionless surface, as shown below.
When the ball reaches point A it has mechanical energy of 490 J.
Point B is on the ground.
5.1 State the principle of conservation of mechanical energy in words. (2)
5.2 Use your knowledge of the principle of conservation of mechanical energy
to write down the value of the:
5.2.1 Gravitational potential energy of the ball at point B. (1)
5.2.2 Total mechanical energy at point C. (1)
5.3 Calculate the gravitational potential energy of the ball at point C. (3)
5.4 Determine by calculation whether the ball will reach point D. (5)
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