Physics - P10

Question 1

Equation for momentum

Answer 1

Mommentum = Velocity x mass

Question 2

What is Inertia?

Question 3

What is momentum not?

Answer 3

Not a force, acceleration, velocity or energy

Question 4

Mass is messured in ____________

Answer 4

Kilograms

Question 5

Velocity is messured in __________

Answer 5

Meters per second (m/s)

Question 6

T or F: An object’s momentum us the same as its velocity

Answer 6

False

Question 7

T or F: Momentum is a vector quality

Answer 7

True

Question 8

T or F Momentum is determined by an object’s mass and velocity

Answer 8

True

Question 9

T or F: An explosion can demonstrate the principale of conservation of momentum

Answer 9

True

Question 10

State the principle of conservation of momentum

Answer 10

In a closed system, the momentum is not lost or gained ( the momentum is the same before and after)

Question 11

What does perfectly elastic collision mean?

Answer 11

When two bodies collide but there is no loss in the overall kinetic energy, it is called a perfectly elastic collision.

Question 12

The equation for kinetic energy:

Answer 12

Kinetic energy (Jules) = 1/2 mass (kg) x velocity2 (m/s)
Σk = 1/2m x v2

Question 13

Explain the difference between an elastic and an inelastic collision

Answer 13

The difference between an elastic and an inelastic collision is the loss or conservation of kinetic energy. In an inelastic collision kinetic energy is not conserved, and will change forms into sound, heat, radiation, or some other form. In an elastic collision kinetic energy is conserved and does not change forms.