formulae

Question 1

u

Answer 1

inital velocity

Question 2

v

Answer 2

final velocity

Question 3

t

Answer 3

time

Question 4

a

Answer 4

acceleration

Question 5

s

Answer 5

displacement

Question 6

Speed

Answer 6

Distance/time

Question 7

Average speed

Answer 7

Total distance/ total time

Question 8

Velocity

Answer 8

Displacement/ time

Question 9

Displacement

Answer 9

Distance with direction

Question 10

Acceleration

Answer 10

change in velocity/ change in time

Question 11

How do you find the speed in a distance time graph

Answer 11

Find gradient

Question 12

Free fall

Answer 12

9.82ms^-1

Question 13

Weight

Answer 13

Mass x gravity

Question 14

Define weight

Answer 14

Weight is the effect of a gravitational field on a mass

Question 15

Density

Answer 15

Mass/volume

Question 16

newtons 1st law

Answer 16

Objects will remain at rest, or move with a constant velocity unless acted on by a resultant force

Question 17

newtons 2nd law

Answer 17

F = ma

Question 18

What does the decreasing trend in extension graph mean

Answer 18

The spring has reached its elastic limit

Question 19

Hooke’s law

Answer 19

Force = Spring constant x extension
F=kx

Question 20

Moment

Answer 20

Moment = force x perpendicular distance to pivot
m=df

Question 21

Momentum

Answer 21

Mass x velocity
p=mv

Question 22

Conservation of Momentum

Answer 22

The total momentum before a collision = The total momentum after a collision

Question 23

Impluse

Answer 23

impulse = force × change in time
impulse = FΔt

Δp = mv − mu
m = mass in kg
v = final velocity in m/s
u = initial velocity in m/s