Unit 5: Momentum

Question 1

elastic collision

Answer 1

-momentum and kinetic energy are conserved, “bounce off”

Question 2

inelastic collision

Answer 2

momentum is conserved, kinetic energy is not conserved/ is less than before the collision, bounce off

Question 3

completely inelastic

Answer 3

when colliding bodies stick together, momentum is conserved, KE not conserved
-add masses bc it is now “one” object

Question 4

momentum equation

Answer 4

P=mv
m= mass
v= velocity

Question 5

is momentum scalar or vector?

Answer 5

vector, same direction as velocity

Question 6

how to change momentum/ cause impluse

Answer 6

1. change mass
2. change velocity
3. change speed/,agnitude

Question 7

what is a change in momentum

Answer 7

and impulse

Question 8

impulse

Answer 8

force over time, causes change in momentum, vector in same direction as change in motion

Question 9

how to solve for impulse

Answer 9

J=∆P=m∆v
OR
J= F∆t
J= impulse
∆P= final-initial momentum
F= force added
t=time

Question 10

impulse momentum theorem

Answer 10

impulse is a change in motion

Question 11

area of a force v time graph

Answer 11

gives impulse/ change in momentum

Question 12

area of a force v displacement graph

Answer 12

gives work

Question 13

momentum

Answer 13

mass in motion, quantity of motion, a conserved quantity (in a closed system)