When a car speeds up, its gain in kinetic energy comes from the work done on it. In the same way, when a moving car slows, work is done to reduce its kinetic energy.

• true

• false

Tags

NGSS.HS-PS3-1

When a car speeds up, its gain in kinetic energy comes from the rest time. In the same way, when a moving car slows, work is done to reduce its kinetic energy.

• true

• false

Tags

NGSS.HS-PS3-1

The work - energy theorem, means that the work in the equation is the net work, work based on the net force.

• true

• false

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

NGSS.HS-PS3-3

When you push on an object and friction also acts on the object, then the change of kinetic energy is equal to the work done by the net force. Which is your push minus friction.

• true

• false

Tags

NGSS.HS-PS2-1

The work - energy theorem applies to decreasing speed as well.

• true

• false

Tags

NGSS.HS-PS3-2

When push minus friction is net force, only part of the total work that you do ______ the object's kinetic energy.

• stay the same

• changes

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

When push minus friction is net force, only part of the total work that you do ______ the object's kinetic energy.

• stay the same

• changes

• stays at rest

Tags

NGSS.HS-PS3-1

When push minus friction is net force, only part of the total work that you do changes the object's kinetic energy. The rest is changed by friction into _________ energy.

Tags

NGSS.HS-PS3-4

Work equals change in kinetic energy, its known as the ________ _________.

If the force of friction is equal and opposite to your push, the net force on the object is ____ and ____ net work is done. Then there is ___ change in the object's kinetic energy.

Tags

NGSS.HS-PS2-1