Types of Collision and Momentum

What quantities are conserved during elastic collision?

• temperature and volume

• kinetic energy and momentum

• kinetic energy and temperature

• momentum and heat

Tags

NGSS.HS-PS2-2

Two objects stick together after collision where some of the kinetic energy is converted into other forms of energy. What type of collision is this?

• elastic collision

• inelastic collision

• perfectly inelastic collision

• linear collision

Two football players with mass 80 kg and 120 kg run directly toward each other with speeds of 8 m/s and 10 m/s respectively. If they grab each other as they collide, the combined speed of the two players just after the collision would be

• 6.5 m/s

• 7.8 m/s

• 9.2 m/s

• 10.5 m/s

Tags

NGSS.HS-PS2-2

A billiard ball collides with a stationary identical billiard ball in an elastic head-on collision. After the collision, which of the following is true of the first ball?

• it maintains it initial velocity

• it has one-half it initial velocity

• it moves in the opposite direction

• it comes to rest

Tags

NGSS.HS-PS2-2

For the total momentum of the system to be conserved during collisions,

• the object should remain at rest.

• kinetic energy is constant.

• no other forces are present.

• gravity is acting on the object.

Tags

NGSS.HS-PS2-2

During a collision. an object experiences an impulse. The impulse causes and is equal to the _____ of the object

• energy change

• kinetic energy change

• force

• momentum

• momentum change

Tags

NGSS.HS-PS2-2

Before objects A and B collide, A has a momentum of 26 kg*m/s and B has a momentum of -14 kg*m/s. After the collision, A has a momentum of 8 kg*m/s. B has a momentum of..

• 2 kg*m/s

• 4 kg*m/s

• 6 kg*m/s

• 12 kg*m/s

• 32 kg*m/s

Tags

NGSS.HS-PS2-2

If 2 objects collide and stick together, what will happen to their velocities?

• velocities will increase

• velocities will decrease

• velocities will stay the same

• none of the above

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-3

In a physics experiment, two carts of mass 1.5 kg each are rolled towards each other.  The orange cart has a velocity of 2 m/s and the blue cart has a velocity of -1m/s.  The carts stick together when they collide.  Calculate their final speed.

• 0.5 m/s

• 1.0 m/s

• 0.33 m/s

• 0.67 m/s

Tags

NGSS.HS-PS2-2

A 10kg toy truck moves at 5m/s East. It collides head-on with a 5kg toy car moving 10 m/s moving west. What is the total momentum of the system?

• 0 kgm/s

• 30 kgm/s

• 50 kgm/s

• 10 kgm/s

Tags

NGSS.HS-PS2-2