Impulse, Momentum and Inertia

Question 1

What are the 5 suvat equations of motion?

Answer 1

v = u +at
s = ut + 1/2at^2
s = vt - 1/2at^2
s = 1/2 (u + v)t
v^2 = u^2 + 2as

Question 2

What is inertia?

Answer 2

An object will stay in it’s motion unless acted upon by an external force

Question 3

How do you calculate the first moment?

Answer 3

mass x distance from the axis

Question 4

How do you calculate the second moment?

Answer 4

mass x square of distance from axis

Question 5

What is the centroid?

Answer 5

The geometrical centre of a body

Question 6

What is the equation for linear momentum?

Answer 6

mass x velocity

Question 7

What is the equation for angular momentum?

Answer 7

angular velocity x moment of intertia

Question 8

Is momentum a conserved quantity?

Answer 8

Yes

Question 9

What is impulse?

Answer 9

Impulse is a certain amount of force you apply for a certain amount of time to cause a change in momentum

Question 10

What is the equation for impulse?

Answer 10

change in momentum = Force x time
/\ p = Ft —-> mv = Ft