Momentum and Energy

How do you calculate momentum?

• Mass*acceleration

• Mass*velocity

• Force*displacement

• velocity/time

Tags

NGSS.HS-PS2-2

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.MS-PS3-4

NGSS.MS-PS3-5

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

NGSS.HS-PS3-2

A 2 kg block starting at rest slides down a frictionless incline of height 5 m. What is the kinetic energy of the block at the bottom of the incline?

• 75 J

• 120 J

• 98 J

• 50 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

A 1500 kg car traveling at 20 m/s collides with a stationary 1000 kg car. If they stick together after the collision, calculate their common velocity.

• 12 m/s

• 8 m/s

• 15 m/s

• 10 m/s

Tags

NGSS.HS-PS2-2

A 2 kg object moving at 4 m/s collides with a 3 kg object at rest. If the 3 kg object moves at -1.6 m/s after the collision, calculate the velocity of the 2 kg object after the collision.

• 4.0 m/s

• 2.4 m/s

• 6.4 m/s

• 8.0 m/s

Tags

NGSS.HS-PS2-2

Headphones are a device the convert ______ energy to _____ energy

• chemical energy; kinetic energy

• light energy; electrical energy

• electrical energy; sound energy

• mechanical energy; thermal energy

Tags

NGSS.HS-PS3-3