Conservation of Momentum - Grade 9

1. Which of the following statements describes momentum?

• It is the product of body’s mass and velocity

• It is the product of body’s mass and acceleration

• It is the sum of body’s mass and velocity

• It is the sum of body’s mass and acceleration

Refers to something that remains constant or unchanged over time.

• conserved

• system

• collision

• equal

It means the same in quantity, size, degree or value.

• conserved

• system

• collision

• equal

1. The total momentum of two objects before collision is 175 kg m/s. What will be their total momentum after collision?

• 50 kg m/s

• 350 kg m/s

• 175 kg m/s

• not enough information

What word can best describe the total momentum in an isolated system?

• conserved

• large

• lost

• low

What is the unit of velocity?

• kg

• kg m/s

• m/s

• all of these

1. A type of collision were two colliding objects bounces back without lasting deformation or generation of heat.

• elastic collision

• inelastic collision

• perfectly inelastic collision

• none of these

1. Mathematically, conservation of momentum can be express using the formula:

• m₁V₁+m₂v₂ = m₁v₁+m₂v₂

• (m1v1+m2v2)(m1v1+m2v2)

• m2v2+m1v1=m1v1+m2v2

• m1v1+m2v2=m1v2+m1v2

It refers to the collection of objects that affect one another during collision.

• gear

• system

• collision

• equal

An event in which two or more objects come together with force, often resulting in a transfer or exchange of energy

• gear

• system

• collision

• equal