Question Bank for Grade 9 Physics

An arrow that is pulled back by a bow has which type of energy?

• gravitational potential
• kinetic energy
• chemical potential
• elastic potential

Energy due to motion is ____________ energy. 

• Potential 
• Energy
• Kinetic
• Friction

Gravitational potential energy depends on the ________ and ________ of the object. 

• Height, mass and gravitational strength
• Friction and movement
• Mass and Movement
• Height and Friction 

Which is the best example that something has kinetic energy?

• a. a car parked on a steep hill 
• b. a tennis ball rolling across the court
• c. a picture hanging on the wall 
• d. a piece of coal before it's burned 

At which point is potential energy greatest?

• W
• X
• Y
• Z

A 0.40 kilogram bird is flying at a constant speed of 8.0 m/s. What is the bird's kinetic energy ?

• 3.2 J
• 4.2 J
• 2.0 J
• 12.8 J

A 60 kg person walks from the ground to the roof of a 80 m tall building. How much increase in gravitational potential energy is there? (Take g = 10 N/kg)

• 600 N
• 4800 J
• 8000 J
• 48,000 J

A pitcher throws a 145 g baseball at a velocity of 30.00 m/s. How much kinetic energy does the ball have?

• 65.85 J
• 87.25 J
• 23.45 J
• 65.25 J

Two objects with different masses are placed on the same shelf. Which object contains more energy?

• The object with a greater mass has more energy.
• The object with less mass has more energy.
• Both objects have the same amount of energy.
• Neither object has any energy because they are not moving

Which point has the most kinetic energy, assuming friction and air resistance are negligible?

• A
• B
• c
• D