Question

a horse of mass 180 kg gallops at a speed of 8 m/s. what is the momentum of the horse?
a. 1440 kg·m/s
b. 22.5 kg·m/s
c. 845 kg·m/s
d. 1955 kg·m/s

Explanation:

Step1: Recall momentum formula

The formula for momentum $p$ is $p = mv$, where $m$ is mass and $v$ is velocity.

Step2: Substitute given values

Given $m = 180$ kg and $v=8$ m/s. So $p=180\times8$.

Step3: Calculate the result

$180\times8 = 1440$ kg·m/s.

Answer:

A. 1440 kg·m/s