Unit 6 and 8 Mixed Practice

Mechanical Energy includes which types of energy?

• Chemical Potential

• Gravitational Potential

• Thermal

• Radiant

What happens to Kinetic energy as the ball rolls down the hill?

• Increases

• Decreases

• Remains the same

Which is an example of Kinetic transferring into Gravitational Potential?

• A bowling ball rolling down a ramp

• A biker riding along a flat road

• A loaded spring releasing

• A kite flying into the air

Felix Baumgartner holds the record for the longest free fall for his jump from the Stratosphere (34,090 m). If Felix has a mass of 90 kg, what is his potential energy before he jumps?

• 3,068,100 J

• 30,067,380 J

• 378.8 J

• 38.7 J

What happens to Mechanical energy as the ball rolls down the hill?

• Increases

• Decreases

• Remains the same

Greatest Kinetic energy will be-

• At the highest point with the highest velocity

• At the highest point with the lowest velocity

• At the lowest point with the highest velocity

• At the lowest point with the lowest velocity

What happens to kinetic energy if velocity is doubled and mass is constant?

• KE doubles

• KE quadruples

• KE is one half

• KE is one fourth

Mereida pulls her 0.2 kg arrow back with 50 J of Elastic Potential Energy. How much Kinetic Energy will the arrow have after she releases it?

• 50 J

• 22.4 J

• 500 J

• 250 J

Mickey Mouse (300 N) is sitting on his 150 N suitcase while traveling 31 m on a moving sidewalk. What is the work done by Mickey Mouse?

• 13,950 J

• 9,300 J

• 4,650 J

• 0 J

What happens to Potential energy as the ball rolls down the hill?

• Increases

• Decreases

• Remains the same