Cuestionario de Física

Front

Josie is the quarterback of her football team, the Bulldogs. What happens to the ball right after Josie throws a pass?

Back

Kinetic energy is transferred from Josie's arm to the ball.

Front

The graph below shows the relationship between the mass of an object and its gravitational potential energy. What can be concluded from the graph?

Back

The gravitational potential energy increases with mass.

Front

A 500-kilogram wrecking ball swings from a crane towards a brick wall. At the top of its swing, the wrecking ball is momentarily stationary (not moving). What is its kinetic energy?

Back

0 J

Front

During a softball game, the pitcher throws the ball and the batter hits it. The batter hits a home run and the ball hits the fence at the end of the field. Which of the following energy transformations occur during the event? Choose the 3 that apply: 0 J, 500 J, 250 J, 1000 J

Back

0 J

Front

Johanna took her little brother to the park because he likes to swing. Which statement is true about the transformation between kinetic and potential energy while the child is swinging?

Back

Kinetic energy is maximum at the lowest point of the swing.

Front

Potential energy is converted into kinetic energy between points A and B.

Back

True

Front

Potential energy is converted into kinetic energy between points B and C.

Back

False

Front

Potential and kinetic energy remain constant between points A and C.

Back

False

Front

What type of change is occurring when the metal oxidizes?

Back

oxidation of metal

Front

What type of change is occurring while the wood is being cut?

Back

Physical change