A police officer was sent to investigate a car accident. He knows the speed of the car, s, can be measured with the equation s = at, where a is the rate of acceleration and t is the time. Which equation can he use to solve for the rate of acceleration?

a = s – t

a = t – s

a = s ÷ t

a = st

My answer is a

Question

A police officer was sent to investigate a car accident. He knows the speed of the car, s, can be measured with the equation s = at, where a is the rate of acceleration and t is the time. Which equation can he use to solve for the rate of acceleration?

 a = s – t 

 a = t – s

 a = s ÷ t

 a = st

My answer is a

anonymous · Answer

If $$s = at$$ and we divide each side by "t", then $$s/t = at/t$$ the "t" on the right will cancel out and the final formula will become $$s/t = a$$