Ps2

What do you need to calculate momentum

• Mass

• Velocity

• Acceleration

• Speed

Tags

NGSS.HS-PS2-2

Momentum is a scalar quantity

• True

• False

Tags

NGSS.HS-PS2-2

Calculate the momentum of a 500g object travelling at 10 m/s

• 0.5 kgm/s

• 5 kgm/s

• 500 kgm/s

• 5000kgm/s

Tags

NGSS.HS-PS2-2

An object is travelling towards a wall with a speed of V and bounces back. Its final speed is also V. What is the change in momentum of the object in terms of m and v

• 0

• mv

• 2mv

• -2mv

Tags

NGSS.HS-PS2-2

An 10 kg object is travelling at a speed of 10 m/s and an external force is applied. It has a new speed of 12 m/s. What is the change in momentum?

• 100 kgm/s

• 120 kgm/s

• 20 kgm/s

• 220 kgm/s

Tags

NGSS.HS-PS2-2

Momentum is conserved when there is:

• An external force to the system

• Only internal forces between object in the system

• Friction acting on the body

Tags

NGSS.HS-PS2-2

Two cars collide. The system is the two cars. What physics principle is this question talking about?

• Conservation of Momentum because the forces are external

• Conservation of Momentum because the forces are internal

• Conservation of Mass

• Conservation of Grass

Tags

NGSS.HS-PS2-2

Two cars collide. The system is only one of the cars. What happens

• Momentum is conserved because the forces are internal

• Momentum is conserved because the forces are external

• There is a change in momentum of the single car because of an external force

• There is a change in momentum of the single car because of an internal force

Tags

NGSS.HS-PS2-2

A cannon has a mass of 1000 kg and a cannon ball has a mass of 10 kg. After firing the cannon ball moves at a speed of 30 m/s to the right. What is the speed of the cannon

• 0.03 m/s to the right

• 0.03 m/s to the left

• 30 m/s to the right

• 30 m/s to the left

Tags

NGSS.HS-PS2-2

A 1000kg car is travelling at 10 m/s when it collides with a stationary 1500kg car. The 1000 kg car comes to a stop. What is the velocity of the 1500kg car?

• 6.7 m/s

• 10 m/s

• 0 m/s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2