Question

Calculate the average speed of a gazelle that runs 140 meters in 5.0 seconds.

Answer 1

You would multiply to find the average meters/minute.
140 x 5.0 = 700.
But, if you're looking for average m/s you would divide.
140/5 = 28.
If you want meters/hour, you have to multiply the average meters/minute by 60.
140 x 5 x 60 = 4,200.

I'm not sure which one you're looking for but I hope something I wrote helps!

Answer 2

Answer:

Average speed(S) is given by:

$S =\frac{D}{t}$              ....[1]

where,

D is the total distance and t is the time.

As per the statement:

A gazelle that runs 140 meters in 5.0 seconds.

⇒D = 140 meters and t = 5 seconds

Substitute in [1] we have;

$S =\frac{140}{5}$

Simplify:

⇒S = 28 m/sec

Therefore, average speed of a gazelle is, 28 m/sec