3

If the velocity of a ship that moves in a straight line inc

aight line increases from 20 m/s to 30 m/s

calculate the time taken by the ship to cover

this displacement

The time taken by the ship to cover the distance, t = (x/25) s

Explanation:

Given data,

The initial velocity of the ship, u = 20 m/s

The final velocity of the ship, v = 30 m/s

The average velocity of the ship, V = (20 + 30) / 2

= 25 m/s

The distance covered by the ship, d = x m

Then the time taken by the ship to cover the displacement is,

d = V x t

∴ t = d / V

Substituting the values,

t = x / 25

t = (x/25) s

Hence, the time taken by the ship to cover the distance, t = (x/25) s