Motion and Energy

Which is false?

• Speed is determined by the direction and the time.

• Acceleration can be positive or negative.

• Velocity is speed with direction.

• Energy is the ability to do work.

As a baseball flies through the air directly after being hit, which type of energy is at its maximum?

• thermal energy

• kinetic energy

• potential energy

• mechanical energy

The airplane traveled 720 kilometers north in 6 hours. What is the speed.

• 120mi/hr north

• 120km/hr

• 120km/hr north

• 120mi/hr

The amount of thermal energy depends on

• force and distance

• mass and distance

• temperature and force

• mass and temperature

Which is the unit for weight?

• Newtons

• pounds

• grams

• tons

Kinetic is the energy of motion like ____________ is the energy of position.

• thermal

• potential

• acceleration

• mechanical

Which of the following has the most thermal energy?

• 10 grams of soup at 89 degrees

• 6 grams of soup at 89 degrees

• 8 grams of soup at 89 degrees

• 2 grams of soup at 89 degrees

Which is false?

• Your mass remains the same regardless of the planet you are on.

• Your mass can be measured in kilograms.

• Your weight is determined by the gravitational pull.

• Your weight can be measured in pounds.

Which of the following explains the difference between speed and velocity?

• Speed has motion and velocity does not.

• Speed involves time, and velocity does not.

• Velocity involves distance, and speed does not.

• Velocity has direction and speed does not.

Which of the following is a false statement?

• Gravity is a force of attraction between objects.

• Th more massive an object is, the stronger its gravitational force.

• Gravity depends on the mass of an object and the texture of its surface.

• The further apart objects are, the weaker the gravity is between them.