Question #37f58

Jan 22, 2018

$17.5$ meters

Explanation:

When using constant velocity, we can use the equation d = vt, or
distance = velocity * time

So, since we know the time and velocity, we can plug those in to our equation to find the distance.

our velocity is $2.5$ m/s
our time is $7$ seconds
our distance is unknown.

this gives us $d = \left(2.5 \frac{m}{s}\right) \cdot \left(7 s\right)$

When we calculate $\left(2.5 \cdot 7\right)$ we get $19.84$ as our distance.

To remember this with logic, instead of formula, you can think of it as:

If i am moving at a distance of $2.5$ meters for every second I walk, and want to walk for $7$ seconds, I will walk $2.5$ meters seven times.

So, $2.5 + 2.5 + 2.5 + 2.5 + 2.5 + 2.5 + 2.5 = 2.5 \cdot 7 , \mathmr{and} 17.5$ meters.