Question

Suppose that you are running down the street at 6 m/sec. You see your dog ahead and speed up to 10 m/sec over 20 sec to catch him. What is your acceleration in m/s2?

Answer 1

Acceleration=( change in velocity)/ (time taken),
= (10-6)/20 = 0.2m/s^2

Answer 2

Answer:

The answer is 0.2 $m/s^{2}$.

Explanation:

We can calculate the acceleration since we know that acceleration is change in velocity over time or:

a =Δv/t

where a = acceleration, Δv = change in velocity, t = time.

We know that Δv = v2 - v1          where, v2 = 10 m/s and v1 = 6 m/s

Therefore,

a = $\frac{10 - 6}{20}=\frac{4}{20}= 0.2 m/s^{2}$