equilibrium and momentum

Question 1

What is torque?

Answer 1

Torque = F * radius sin theta

Radius is the distance from the fulcrum to the force applied

Question 2

What is impulse?

Answer 2

Change in momentum due to a net force

impulse = delta p = F * delta t

Question 3

What is momentum?

Answer 3

p = mv = F*t

Question 4

Force in terms of momentum?

Answer 4

mv/t = p/t

Question 5

Elastic collision

Answer 5

both KE and momentum are conserved

Question 6

inelastic collision

Answer 6

only momentum is conserved,

KE is converted to internal energy = 1/2m1v1 ^2 + 1/2m2v2^2 > 1/2(m1+m2)vf^2