Question

your initial speed is zero. if you increased your speed by 4 m/s after only 2 seconds and continue to accelerate at the same rate, what will your speed be after 10 seconds?

Answer 1

Answer:

20 m/ s

Explanation:

change in velocity = 4m/ s

$acceleration = \frac{rate \: of \: change \: of \: velocity}{time}$

$acc = \frac{4}{2} \\ = 2$

initial velocity = 0m/ s

• let velocity after 10s be v

$2 = \frac{v - 0}{10}$

cross multiplying

$20 = v$

so the velocity after 10s will be 20m/s