Year 1 Mechanics

Question 1

Displacement

Answer 1

The shortest distance between two points
Vector quantity

Question 2

Average speed

Answer 2

Distance / time

Question 3

Average velocity

Answer 3

Displacement / time

Question 4

Acceleration

Answer 4

A measure of how much velocity is changing

Question 5

Constant acceleration equation without s

Answer 5

v = u + at

Question 6

Constant acceleration equation without u

Answer 6

s = vt - 1/2at^2

Question 7

Constant acceleration equation without v

Answer 7

s = ut + 1/2 at^2

Question 8

Constant acceleration equation without a

Answer 8

s = 1/2 (u + v)t

Question 9

Constant acceleration equation without t

Answer 9

v^2 = u^2 + 2as

Question 10

g (maths)

Answer 10

9.8ms^-2

Question 11

Newton’s first law

Answer 11

Every object constitutes in a state of rest or uniform motion in a straight line unless acted on by a resultant external force force

Question 12

Newton’s second law

Answer 12

F = ma
F = (mv)/t

Question 13

F = ma

Answer 13

Force = mass x acceleration

Question 14

Newton’s third law

Answer 14

When object A exerts a force on object B, object B exerts and equal and opposite force on object A

Question 15

Particle

Answer 15

No size
All forces are applied at a single point
No air resistance

Question 16

Light

Answer 16

Ignore weight

Question 17

Inelastic/ inextensible

Answer 17

Length is constant

Question 18

Smooth

Answer 18

Ignore friction

Question 19

Forces

Answer 19

Weight
Resistance
Normal reaction force
Tension
Thrust

Question 20

How to get velocity from displacement

Answer 20

Differentiate

Question 21

How to get acceleration from velocity

Answer 21

Differentiate

Question 22

How to get velocity from acceleration

Answer 22

Integrate

Question 23

How to get displacement from velocity

Answer 23

Integrate