Understanding Momentum and Energy Concepts

How do you calculate momentum?

• Mass*acceleration

• Mass*velocity

• Force*displacement

• velocity/time

Tags

NGSS.HS-PS2-2

What is the relationship between work and energy?

• Work and energy are unrelated concepts.
• Energy can be created or destroyed by doing work

• Energy can be only created by doing work.

• Work done on an object equals the change in its mechanical energy.

What is the principle of conservation of momentum?

• Momentum is always conserved in elastic collisions

• Momentum is conserved only in inelastic collisions

• Momentum is conserved in isolated systems

• Momentum is never conserved

Tags

NGSS.HS-PS2-2

Calculate the momentum of a 5 kg object moving at a velocity of 10 m/s.

• 50 kg·m/s

• 5 kg·m/s

• 10 kg·m/s

• 100 kg·m/s

Tags

NGSS.HS-PS2-2

Identify the type of energy transformation that occurs when a pendulum swings from its highest point to its lowest point.

• Kinetic to potential energy

• Potential to kinetic energy

• Chemical to thermal energy

• Electrical to mechanical energy

Tags

NGSS.HS-PS3-3

A force of 20 N is applied to move a box 5 meters. Calculate the work done.

• 100 J

• 25 J

• 4 J

• 200 J

Tags

NGSS.HS-PS3-2

A 2 kg ball is held at a height of 10 m. What is its gravitational potential energy?

• 50 J
• 250 J
• 196 J

• 100 J

Tags

NGSS.MS-PS3-2

A car of mass 1000 kg is moving with a velocity of 20 m/s. Calculate the kinetic energy of the car.

• 200,000 J

• 20,000 J

• 400,000 J

• 10,000 J

Tags

NGSS.HS-PS3-1

How is power calculated?

• Power = Force*distance

• Power=Work/Time

• Power=momentum/time

• Power = Potential Energy

A 1000 kg car accelerates from rest to 30 m/s in 10 seconds. Calculate the average power output of the car's engine.

• 45,000 W

• 90,000 W

• 15,000 W

• 30,000 W

Tags

NGSS.HS-PS2-1

NGSS.HS-PS3-1