How far can a girl run in 15 min. if she runs at an avg speed of 16 km/hr? (hint: remember to convert minutes to hours.)

Explanation:

We know the equation,

Speed = distance / time

But here it's mentioned the average speed, so the equation can be rewritten as,

Average speed = total distance/time taken

And we get,

Total distance = average speed × time taken

So we get by substituting,

Total distance = 16km/h × (15min/60)

= 4 km

Mind that I have converted time to hours by dividing by 60.

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle

so easy. just google the electromagnetic waves and it’ll pop up.