G6 Kinetic Energy

Which of the following is an example of kinetic energy?

• A) A ball at the top of a hill

• B) A ball on a table

• C) A ball that is not stationary

• D) A car parked in a garage

• E) A still airplane on the runway

Which of the following is not a factor that affects the kinetic energy of an object?

• A) Mass of the object

• B) Speed of the object

• C) Shape of the object

• E) None of the above

What is the formula for calculating the kinetic energy of an object?

• A) K = 1/2mv^2

• B) K = mv^2

• C) K = 2mv

• D) K = m/v^2

• E) K = m^2v^2

Which of the following statements is true about the relationship between kinetic energy and potential energy as a ball rolls down a hill?

• A) As kinetic energy increases, potential energy decreases

• B) As potential energy increases, kinetic energy increases

• C) There is no relationship between kinetic energy and potential energy

• D) As kinetic energy increases, potential energy increases

• E) None of the above

What happens to the kinetic energy of an object when its velocity is doubled?

• A) The kinetic energy is halved
• B) The kinetic energy is doubled
• C) The kinetic energy is quadrupled
• D) The kinetic energy is reduced to one-fourth
• E) The kinetic energy remains the same

What is the kinetic energy of an object with a mass of 2 kg and a velocity of 5 m/s?

• A) 10 J
• B) 20 J
• C) 25 J
• D) 30 J
• E) 50 J

A 500-kg roller coaster cart is traveling at a speed of 20 m/s. What is its kinetic energy?

• A) 50,000 J

• B) 100,000 J

• C) 200,000 J

• D) 500,000 J

• E) 1,000,000 J

A baseball is thrown with a velocity of 30 m/s. If the mass of the baseball is 0.15 kg, what is its kinetic energy?

• A) 13.5 J

• B) 22.5 J

• C) 67.5 J

• D) 225 J

• E) 450 J

A car with a mass of 1000 kg is traveling at a speed of 20 m/s. What is the kinetic energy of the car?

• A) 2,000 J

• B) 20,000 J

• C) 40,000 J

• D) 100,000 J

• E) 200,000 J

A bullet with a mass of 0.02 kg is fired from a rifle with a velocity of 500 m/s. What is the kinetic energy of the bullet?

• 1) 250 J

• 2) 500 J

• 3) 1000 J

• 4) 2500 J

• 5) 5000 J