3.4.2 - DEFINITIONS

Question 1

Breaking stress?

Answer 1

the maximum stress that an object can withstand before failure occurs

Question 2

brittle?

Answer 2

a brittle object will show very little strain before reaching its breaking stress

Question 3

elastic behaviour?

Answer 3

if a material deforms with elastic behaviour, it will return to its original shape when the deforming forces are removed

Question 4

Elastic collsion?

Answer 4

a collision in which the total kinetic energy of the system before is equal to the total kinetic energy of the system after

Question 5

Elastic limit?

Answer 5

the force beyond which an object will no longer deform elastically, an instead deform plastically; permanently deformed

Question 6

Elastic strain energy?

Answer 6

the energy stored in an object when it is stretched

Question 7

Hooke’s law?

Answer 7

the extension of an elastic object will be directly proportional to the force applied to it up to the object’s limit of proportionality

Question 8

Inelastic collision?

Answer 8

a collision in which the total kinetic energy of the system before the collision is not equal to afterwards

Question 9

Plastic behaviour?

Answer 9

when a material deforms without returning to its original shape once deforming forces are removed

Question 10

spring constant?

Answer 10

the constant of proportionality for the extension of a spring under a force