FORM 3: 7.3 CONSERVATION OF ENERGY

Which statement describes the Principle of Conservation of Energy?

Principle of Conservation of Energy states that energy can neither be _____________ or _____________.

Diagram shows a trolley is placed on a runway. What is the change of energy form when the trolley moves down the runway?

From the diagram, state at which point the gravitational potential energy is maximum.

Calculate the potential energy when the roller coaster is at point Y. The mass of the roller coaster is 100kg.

Gravitational potential energy = mass, m x gravitational acceleration, g x height. Use g = 10 m/s²

At which point that the kinetic energy is at the maximum?

State the change in energy form from Q to R.

Which of the position of the ball ONLY possesses gravitational potential energy? Tick the correct answers.

Jack fired a cannonball with a mass of 2 kg into the air. The cannonball went up to 500 m before it beings to fall to the ground. Calculate the velocity of the cannonball before it begins to fall to the ground.

A stone with a mass of 4 kg is dropped from a height of 4 m. Calculate the kinetic energy of the rock when the rock falls to the ground.