GCSEPhysNewtLawsMmtmCards13

Question 1

Newton’s First Law of Motion:

Answer 1

Every object continues in its present state of rest or uniform motion in a straight line unless it is acted upon by an external resultant force.

Question 2

Equation for Newton’s second law of motion

Answer 2

RF = ma

Question 3

Equation for Newton’s second law of motion involving momentum

Answer 3

RF = (mv-mu)/t

Question 4

Units for momentum

Answer 4

kgm/s or Ns

Question 5

Equation defining momentum:

Answer 5

Momentum =mass x velocity

Question 6

Impulse - Momentum equation

Answer 6

Change in Momentum = Resultant Force x Time

Question 7

The conservation of momentum equation for a perfectly inelastic collision can be written as…

Answer 7

m₁u₁ +m₂u₂ = (m₁ + m₂) v

Question 8

The conservation of momentum equation for a collision between two masses

Answer 8

m₁u₁ + m₂u₂ = m₁v₁ +m₂v₂

Question 9

Newton’s Third Law of Motion

Answer 9

If an object A exerts a force on object B, then the object B exerts an equal and opposite force on object A

Question 10

In a perfectly inelastic collision the masses …??

Answer 10

stick together

Question 11

In an elastic collision the TOTAL …??… is conserved

Answer 11

kinetic energy