Energy

Energy

Multiple Select

What types of energy is present in a car moving with constant speed on a rough ground surface?

• Chemical Potential Energy

• Gravitational Potential Energy

• Kinetic Energy

• Thermal Energy (heat)

Multiple Choice

A car is accelerating uphill.

Which of the following statements is true?

• GPE increase,

  KE decrease

• GPE increase,

  KE increase

• GPE decrease,

  KE decrease

• GPE decrease,

  KE increase

Multiple Select

At which position of the pendulum will the GPE be the highest?

• 1

• 2

• 3

Multiple Select

At which position of the pendulum will the KE be the highest?

• 1

• 2

• 3

Gravitational Potential Energy

Fill in the Blanks

A stone of mass 600 g is on top of a cliff, which is 10 m above the ground. What is the gravitational potential energy that the stone possesses? (Take g to be 10 m/s²)

[Do not need to write units]

Fill in the Blanks

A 2 kg ball possesses 250 J of gravitational potential energy. (Take g to be 10 m/s²)

What is the height of the ball?

Kinetic Energy Calculation Examples

Fill in the Blanks

Calculate the kinetic energy that a man of mass 60 kg possesses when he runs at a speed of 3 m/s.

[Do not need to write the units]

Fill in the Blanks

The kinetic energy of a 1500 kg car is 70 kJ. It travels on a flat ground.

Calculate the speed of the car in m/s.

Leave your answer to 3 s.f.

Do not put units in your answer.