2. an nfl wide receiver prospect runs 40 m in 4.5 seconds. what is the average speed of the wide receiver
(m/s)?

8.89 m/s

Explanation:

The average speed of an object in motion can be calculated as:

where

d is the distance covered

t is the time taken

In this problem,

d = 40 m

t = 4.5 s

Substituting into the equation,

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table