Question

A horse is riding 9m/s. In two seconds it slows down to 1m/s, what is the acceleration of the horse.

Answer 1

The acceleration of the horse is -4 m/s².

Step-by-step explanation:

The horse starts with an initial velocity of 9 m/s and slows down to a final velocity of 1 m/s in 2 seconds. To calculate the acceleration, we use the formula:

Acceleration (a) = (final velocity - initial velocity) / time

Plugging in the values, we get:

Acceleration = (1 m/s - 9 m/s) / 2 s = -4 m/s²

Therefore, the acceleration of the horse is -4 m/s².

Answer 2

-4m/s²

Step-by-step explanation:

Given parameters:

Initial velocity = 9m/s

Final velocity = 1m/s

Time taken = 2s

Unknown:

Acceleration = ?

Solution:

The acceleration of a body is the change in velocity of a body with time.

Acceleration =
`(Final velocity - Initial velocity )/(time)`

Insert the parameters and solve;

Acceleration =
`(1 - 9)/(2)` = -4m/s²

We can say, the car is decelerating at a rate of 4m/s²