forces - collisions (whatyouneed2know)

Question 1

what is an elastic collision and what situation is it

Answer 1

it is where all energy and momentum is conserved in a collision

it is an ‘ideal’ situation

Question 2

what is an inelastic collision and what situation is it

Answer 2

it is where kinetic energy is NOT conserved in a collision due to loss of thermal and sound energy

it is a ‘real world’ situation

Question 3

what happens in a collision (using momentum, kinetic energy, conservation, all types of energy)

Answer 3

momentum is ALWAYS conserved but kinetic energy rarely is…
HOWEVER the total of all types of energy are always conserved

Question 4

‘sticky’ collision

Answer 4

when objects JOIN together upon collision

Question 5

‘rear-end’ collision

Answer 5

when one object CATCHES UP with another

Question 6

‘explosion’ collision

Answer 6

when one large object SPLITS into smaller pieces

Question 7

‘static’ collision

Answer 7

when ONE object is NOT MOVING at the start

Question 8

‘head-on’ collision

Answer 8

when BOTH objects are moving towards EACH OTHER