Work, Energy, and Power

What are the two necessary conditions for work to be done?

• Force and Velocity

• Force and Displacement

• Force and Time

What is the unit for work?

• Joules

• Newton

• Watts

Which of the following illustration shows elastic potential energy?

• 
• 
• 

Tags

NGSS.MS-PS3-2

Which of the following statements show kinetic energy?

• The battery of a lit flashlight

• A golf ball placed at the edge of the hole

• A river flowing down a hill

Tags

NGSS.HS-PS3-2

When did an object have more kinetic energy?

• When the time given on an object doubled

• When the mass of an object doubled

• When the mass of an object becomes half

Tags

NGSS.HS-PS3-1

What are the factors that can affect the power?

• Work done and time

• Work done and velocity

• Work done and force

What do you think is happening to Tom?

• no potential energy

• potential energy is more

• kinetic energy is zero

• both potential energy and kinetic energy is existing

What is the work done?

• zero

• non-zero

• potential energy is more for sphere

• potential energy is more for cart

• kinetic energy is zero for sphere

• both A and C

When force is 5 N and displacement is 20 m. what is the work done?

• 100 J

• 100 N

• 10 Nm

• both A and B