forces - all equations

Question 1

momentum equation

Answer 1

p = mv
momentum = mass x velocity

Question 2

force equation

Answer 2

F = ma
force = mass x acceleration

Question 3

impulse (2)

Answer 3

I = mv - mu
—> impulse = change in
momentum (mv)
I = Ft
—> impulse = force x time

Question 4

moment

Answer 4

moment = Fd
moment = force x perpendicular distance to pivot (distance)

Question 5

acceleration

Answer 5

a = v - u/
t
acceleration = change in speed/
time

Question 6

stopping distance

Answer 6

stopping distance = thinking distance + braking distance

Question 7

conservation of momentum

Answer 7

m1 x u1 + m2 x u2
EQUALS
m1 x v1 + m2 x v2

(in a closed system)
total momentum before collision = total momentum after collision

Question 8

principle of moments

Answer 8

total anticlockwise moments = total clockwise moments

Question 9

inertial mass (rearranged too!)

Answer 9

inertial mass = force/
acceleration

force = acceleration x inertial mass

acceleration = force/
inertial mass