Kinetic energy Ck-12 and potential energy Ck-12

The kinetic energy of a moving object depends on its mass and its ________.

• velocity

• distance

• volume

• acceleration

Work, which is required to move a body from a resting position is called ________.

• rotation energy

• kinetic energy

• vibrational energy

• potential energy

If a 50kg object slows down to a velocity of 1 m/s, how much kinetic energy does it have?

• 100 J

• 50 J

• 25 J

• none of the above

The bowling ball in the following figure is whizzing down the bowling lane at 4 m/s. If the mass of the bowling is 7 kg, what is the kinetic energy?

• 52

• 48

• 56

• 66

If the velocity of gas molecules is doubled, then its kinetic energy will be ______.

• doubled

• tripled

• quadrupled

• none of the above

A person of 82 kg is in an elevator. If the elevator is moving at a speed of 5 m/s, what's the person's kinetic energy?

• 980 J

• 1280 J

• 1025 J

• 1435 J

• 1004 J

A missile is flying at a speed of 125 m/s. If the missile has a mass of 125 kg, what is its kinetic energy?

• 986,300 J

• 976,563 J

• 910,563 J

• 893,280 J

• 780,450 J

If there is a 2 kg ball and a 5 kg ball with the same kinetic energy, which one will be moving faster?

• the 5 kg ball

• the 2 kg ball

• they will move with the same speed

• none of the above

Mass and (a)   are responsible kinetic energy.

One (a)   is the amount of energy needed to apply a force of 1 Newton over a distance of 1 meter. (Spell out your answer.)