Collision Momentum

The cart’s change of momentum,\Delta p_x, is

• –20 kg m/s

• -10 kg m/s

• 0 kg m/s

• 10 kg m/s

• 30 kg m/s

Tags

NGSS.HS-PS2-2

In a two-body collision,

• momentum is always conserved

• kinetic energy is always conserved

• neither momentum nor kinetic energy is conserved

• both momentum and kinetic energy are always conserved

Tags

NGSS.HS-PS2-2

A car has 10,800 Kg x m/s of momentum as it collides with a trash dumpster AT REST. How much TOTAL MOMENTUM will the car and dumpster have after collision?

• Less than 10,800 Kg x m/s

• More than 10,800 Kg x m/s

• The same. 10,800 Kg x m/s

• Not enough information.

Tags

NGSS.HS-PS2-2

What will the TOTAL MOMENTUM be AFTER COLLISION?

• 12 Kg x m/s

• 10 Kg x m/s

• 24 Kg x m/s

• -24 Kg x m/s

Tags

NGSS.HS-PS2-2

Tags

NGSS.HS-PS2-2

Which of the following is an example of a perfectly inelastic collision?

• Two billiard balls colliding and bouncing off each other.

• A car crash where the cars stick together.

• A rubber ball bouncing off the ground.

• A tennis ball hitting a racket and bouncing back.

Tags

NGSS.HS-PS2-2

Which of the following techniques is commonly used to analyze collisions in two dimensions?

• Vector decomposition

• Scalar multiplication

• Matrix inversion

• Differential calculus

Tags

NGSS.HS-PS2-2

What happens to the momentum of a system if no external forces act on it?

• It increases.

• It decreases.

• It remains constant.

• It becomes zero.

Tags

DOK Level 2: Skill/Concept

A 2 kg object moving at 3 m/s collides elastically with a 1 kg object at rest. What is the velocity of the 1 kg object after the collision?

• 1 m/s

• 2 m/s

• 3 m/s

• 4 m/s

Tags

NGSS.HS-PS2-2

What is 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

• 15 kg·m/s

Tags

NGSS.HS-PS2-2