Physics Energy Quiz

For which of the following is an example of “Work” being done on an object?

• A tug of war that is evenly matched.

• A student pushing against a brick wall that doesn’t move.

• A crane lifting a car.

• A force that is acting 90 degrees with respect to the motion.

Which of the following is true about the Physics definition of “Work”?

• Work is a vector quantity that has both magnitude and direction.

• Work is a scalar quantity that can be positive or negative.

• Work is the product of mass and velocity.

What are the SI units for Potential Energy, Kinetic Energy, and Total Energy?

• J, Nm, E

• J, J, J

• m, kg, and m/s

What is the correct equation for "Work"?

• W = mgcos(angle)

• W = Fdcos(angle)

• W = vt

• W = mgt

A car is driving up a hill at 15.0 m/s. If its mass is 1500 kg what is the car’s kinetic energy?

• 675,000 J

• 60 J

• 475,000 J

• 169,000 J

Calculate the speed of an 8.0 x 10⁴ kg airliner with a kinetic energy of 1.1 x 10⁹ J:

• 170 m/s

• 8,800 m/s

• 13,750 m/s

• 340 m/s

When you place an object on a high shelf what should it have the most of?

• Momentum

• Potential Energy

• Kinetic Energy

• Gravity

What is meant by conservation of energy?

• Energy is created from atom vibrations

• Total Mechanical Energy remains constant

• Energy can only transfer between potential states

• To conserve energy one must begin with the creation of the universe

What is the gravitational potential energy of a projectile with mass 10 kg at a height of 20 m?

• 200 J

• 10 J

• 1960 J

• 34.5 J

Which type of energy increases when you compress a spring?

• elastic potential energy
• kinetic energy
• radiant energy
• sound energy