Grade 12 Physics Quiz

Calculate the kinetic energy of a 500 kg object moving at a speed of 10 m/s.

• 15000 J

• 5000 J

• 10000 J

• 25000 J

A car has a kinetic energy of 4000 J while traveling at a speed of 20 m/s. What is the mass of the car?

• 1000 kg

• 3000 kg

• 2000 kg

• 500 kg

If an object has a kinetic energy of 100 J and a speed of 5 m/s, what is its mass?

• 20 kg

• 10 kg

• 2 kg

• 4 kg

What is the acceleration due to gravity on Earth?

• 5.67 m/s^2

• 10.25 m/s^2

• 7.83 m/s^2

• 9.81 m/s^2

Calculate the force of gravity on a 60 kg object on the surface of Earth.

• 60 N

• 588.6 N

• 1000 N

• 200 N

What is the weight of a 70 kg person on Earth?

• 70 N

• 7 N

• 700 N

• 686.7 N

Determine the gravitational potential energy of a 50 kg object at a height of 10 meters above the ground.

• 5000 J

• 100 J

• 7500 J

• 2500 J

If an object has a gravitational potential energy of 500 J and a height of 5 meters, what is its mass?

• 10 kg

• 100 kg

• 2.5 kg

• 25.5 kg

A 100 kg object is at a height of 20 meters. What is its gravitational potential energy?

• 5000 joules

• 19600 joules

• 1000 joules

• 40000 joules

Using Newton's Gravitational Law, calculate the force of gravity between two objects with masses of 80 kg and 120 kg, separated by a distance of 5 meters.

• 0.5 N

• 3.8 x 10^-8 N

• 2.14 x 10^-7 N

• 1.2 x 10^-6 N