Speed is equal to

If a runner goes 200m in 24.3 s what is his speed?

A lighting strike is witnessed 5.2 km away and the thunder takes 15.4s to reach the observer at what speed does the sound wave travel at?

A car travels 6km in 4 minutes calculate the speed of the car in m/s?

u = initial velocity

v = final velocity

a = acceleration

t = time

s = distance (displacement)

Slope of a line from an equation

Problem solving techniques,

Some problems will state that there are 2 directions at 90o to each other. Therefore these directions are perpendicular. We know the product of the slopes of 2 perpendicular lines is = -1