Unbalanced Forces and Acceleration

Question 1

Hooke’s Law + Obeyed By:

Answer 1

The extension is directly proportional to the force applied.
- Metal Springs, metal wires

Question 2

Elastic Stretching

Answer 2

Returns to its original length after deformation

Question 3

Plastic Stretching

Answer 3

Permanently deformed
-Will not return to its initial length
-Limit of proportionality

Question 4

Force, mass and acceleration:

Answer 4

F(N) = m(kg)a(m/s^2)

Question 5

Vector Vs Scalar

Answer 5

Vector: Direction + Force
Scalar: Force Only

Question 6

Vector Quantities:

Answer 6

Displacement, Velocity, ACCLERATION, Weight

Question 7

Scalar Quantities

Answer 7

Distance, Speed, Density Mass

Question 8

Friction:

Answer 8

A force that opposes motion

Question 9

Terminal Velocity

Answer 9

Object Falls, Low air resistance, Weight causes large resultant force
As object speeds up, air resistance increases, eventually =as weight force
Hence, forces balanced, no resultant force
Object no longer accelerates, reaches constant speed