Spring Final 8th Science 2024

kinetic energy is the energy of

which would increase the kinetic energy of a wagon? select all that apply

• add mass to the wagon

• decrease the mass of the wagon

• increase the speed of the wagon

• decrease the speed of the wagon

which has kinetic energy?

• tank of gasoline

• a moving car

• a battery

• water in a reservoir

a dump truck, a sports car, and a bicycle are traveling at the same velocity. Which is true?

• they all have the same kinetic energy

• sports car has the most kinetic energy

• bicycle has the least kinetic energy

• more info is needed

which type of energy does an object NOT have if it is not moving?

• kinetic energy

• gravitational potential energy

• elastic potential energy

• chemical potential energy

Which indicates what happens to the kinetic energy when the mass of a moving object increases?

• kinetic energy does not change

• kinetic energy increases by the same factor as the mass increase

• kinetic energy increases by the square of the same factor as the mass increase

• kinetic energy increases by the same factor as the mass increase

Which indicates what happens to the kinetic energy of an object when its speed increases?

• kinetic energy does not change

• kinetic energy increases by the same factor as the speed increase

• kinetic energy increases by the square of the same factor as the speed increase

• kinetic energy decreases by the same factor as the speed increase

moving a book to a lower shelf decreases its potential energy

• true

• false

a rock at the edge of a cliff has kinetic energy because of its position

• true

• false

energy that is stored is kinetic energy

• true

• false