Aplane startling from rest accelerates at 3 m/s square. calculate the increase in velocity after 25 sec

75 m/s

Explanation:

We can apply motion equations here

V = U + a * t

V =  velocity @ t time

U = initial velocity

a = acceleration

t = time taken

V = U + a * t

V = 0+ 3 * 25

V = 75 m/s

After  25 seconds , subjected to the given acceleration velocity is increased from 0 to 75 m/s

second mirror gathers light from a faraway object and reflects it to another mirror. - a.

explanation:

the masses of the objects and the distance between them