elastic and inelastic collisions

Velocity is a vector which means it has which of the following?

• Direction

• Speed

• Magnitude

• Distance

Joe is trying to tackle Carson while Carson is standing still. Joe is running at 15 m/s and has a mass of 32 kg. Carson has a mass of 64 kg. What is their final velocity, assuming this is a perfectly inelastic collision? (do not write units)

Tags

NGSS.HS-PS2-2

What is an elastic collision?

• An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies is different.

• An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies remains the same.

• An inelastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies remains the same.

What is an inelastic collision?

• When two objects collide, becoming stuck together and internal kinetic energy is lost (but not really lost, it transfers to different forms of energy)

• When two objects collide, becoming stuck together and internal kinetic energy is lost

• When two objects don't collide, becoming stuck together and internal kinetic energy is lost (but not really lost, it transfers to different forms of energy)

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

What two variables effect momentum?

• mass

• weight

• height

• Velocity

Tags

NGSS.HS-PS2-2

Mr. Haggerty and Mr. Greenwalt have dressed up in sumo wrestling costumes. They form a perfectly elastic collision. Mr. H has a mass of 56 kgs and a velocity of 6 m/s. Mr. G has a mass of 43 kgs. After they collide Mr. H has a velocity of -2 m/s and Mr. G has a velocity of 8 m/s. What was Mr. G's initial velocity? Round to the nearest one decimal place. Don't write units

Tags

NGSS.HS-PS2-2

Do both objects have velocities acting in the same direction?

• No

• Yes

• No idea

An Elephant is running at a velocity of 14 m/s. He has a mass of 6,300 kg. What is the elephants momentum? Do not write units.

Tags

NGSS.HS-PS2-2

Why is the velocity a vector? How does this impact the way we calculate collisions?

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-3

What is the equation for momementum?

• $p=m\times v$

• $p=m\times a$

• $p=f\div a$

• $m=p\times v$

Tags

NGSS.HS-PS2-2