Question

I REALLY NEED HELP NOW!!

Calculate the AVERAGE SPEED of 400m in 80 seconds.

a. .2 m/s
b. 5 m/s
c. 32000 m/s
d. you need to use your calculator d/t = average speed

Answer 1

B. 5 m/s

Explanation:

Formula for constant velocity

`v=(\Delta x)/(\Delta t)`

plug in the values you have:

`v = (400)/(80) = 5(m)/(s)`

so B. 5 m/s