Question

a horse has an acceleration of 2 m/s. if it starts from the rest, how fast is it going after 1.7 seconds

Answer 1

3.4m/s is the answer

Answer 2

3.4m/s

Step-by-step explanation:

Acceleration a is the time rate of increase in the velocity of a body. Mathematically it is given by;

`a=(v-u)/(t)......................(1)`

where v is the body's final or instantaneous velocity after time t and u is its initial velocity.

We are required to find the instantaneous velocity of the horse after 1.7s.

Given;

`a=2m/s^2\\u=0m/s\\t=1.7s\\v=?`

The initial velocity u = 0 because the horse started from rest.

Substituting all values into equation (1), we obtain the following;

`2=(v-0)/(1.7)\\2=(v)/(1.7)\\hence\\v=2*1.7\\v=3.4m/s`