Work & Energy

If there is no friction on this track, at which point would the coaster have the most kinetic energy?

• A

• B

• C

• D

Tags

NGSS.HS-PS3-2

How high up is a 3200-kg plane if it has 960000 J of potential energy?

• 10 m

• 30 m

• 307200000 m

• 300 m

Tags

NGSS.HS-PS3-1

Energy of a rock perched on a cliff is an example of...

• gravitational
• elastic
• chemical
• kinetic

Tags

NGSS.MS-PS3-2

Energy from a compressed spring would be an example of...

• kinetic
• elastic
• gravitational
• chemical

How do you calculate power?

• P = W/t
• P = E/t
• P = w * t
• P = bbq/chicken

When an object is carried at a constant

velocity by a force,

• no work is done on the

  object.

• the work done is maximum on the

  object.

• the work is done minimum on the

  object.

• the work done is 100 % on the

  object.

what is defined as the product of the magnitudes of displacement and the

component of the force parallel to the displacement ?

• work

• energy

• momentum

• power

Tags

NGSS.HS-PS2-1

A student needs 10 Newtons of force to lift a box to the top of a 2 meter shelf. How much work do they do?

• 12 J

• 8 J

• 20 J

• 5 J

If the books is carried by a force which acts at right

angles to the motion, what is the work done?

• work done is maximum

• no work is done on the

  books.

• work done is 90J

• work done is minimum

The SI Unit for Energy is

• Joule

• Newton

• Calorie

• Watt