Work, Energy and Power

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

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.

Tags

NGSS.HS-PS3-2

Stored energy in the form of position or condition.

• potential energy

• kinetic energy

• momentum

• mechanical energy

Tags

NGSS.MS-PS3-2

What is needed to calculate work?

• force

• distance

• time

• mass

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

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

NGSS.MS-PS3-4

A soccer player kicks a ball with 20 Newtons of force causing it to travel 100 meters. How much work is done on the ball?

• 200 J

• 80 J

• 5 J

• 2000 J

Tags

NGSS.MS-PS3-5

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

Tags

NGSS.HS-PS3-2

Which of these items is not part of the law of conservation of energy?

• energy cannot be created

• energy cannot be destroyed

• energy can be transferred between forms

• energy is destroyed by friction

Tags

NGSS.MS-PS3-5

___________________________is the energy stored in a body or

system because of its position, shape and state.

• kinetic energy

• mechanical energy

• potential energy

• energy due to spring

Tags

NGSS.MS-PS3-2

What type of energy is in this picture?

• Kinetic
• Potential
• Chemical
• Sound

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5