iGCSE Physics equations - Motion ( Double )

What is the equation for average speed

• average speed = distance / time

• average speed = time / distance

• average speed = distance x time

what is the unit of speed

• m

• s

• m/s

• m/s2

what is the unit of acceleration

• m

• s

• m/s

• m/s2

which 2 formula below are correct if using the acceleration equation?

• v = a = ( v-u)

• t = ( v -u) / a

• a = ( v - u) / t

• u = v + at

which formula links acceleration. mass and force?

• a = Fm

• F = ma

• F = m/a

• m = Fa

How do we calculate weight?

• W = m t

• W = m g

What is the unit of weight?

• m/s

• N

• N/kg

• kg

g has a value of 10 on Earth but which 2 units can be used for g

• N/kg

• m/s

• m/s2

• N

what is the equation for efficiency

• = useful energy output / total energy output

• = non useful energy output / total energy input

what is the unit of work done?

• m

• N

• J

• W