Question

A horse accelerates steadily from rest at 4 m/s2 for 3s. What is its final velocity and how far has it travelled?

Answer 1

Answer:

use this formula s =ut+1/2 at square

Answer 2

Answer:

Final velocity of horse=12m/s

Distance traveled by horse=18m.

Explanation:

we need to find the distance travelled and final velocity of horse.

since a horse accelerates from rest so initial velocity is 0.

$u=0 , a=4m/s^{2} ,t=3sec$

we know the equation of motion

$v=u+at$................(i)

v=0+(4x3)

$v=12m/s$

So Final velocity of horse=12m/s

using another equation of motion

$v^{2} - u^{2} =2as$

$12^{2} =2\times4\times s$

s=18m.

Therefore Distance traveled by horse =18m.