Question

1. A coal train in Montana starts from rest and accelerates at 2.5 m/s2 for 15s.

Answer 1

Answer:

37.5m/s

Step-by-step explanation:

If a coal train in Montana starts from rest and accelerates at 2.5 m/s2 for 15s,let us calculate the final velocity of the train.

Use the equation of motion v = u + at where;

v is the final velocity

u is the initial velocity = 0m/s (starts from rest)

a is the acceleration = 2.5m/s²

t is the time = 15secs

Substituting the given parameters into the formula;

v = 0+(2.5)(15)

v = 0+37.5

v = 37.5m/s

Hence the final velocity of the train is 37.5m/s