Question

1. if the object below falls at 10 m/s, what is its kinetic energy? 10kg

Explanation:

Step1: Recall the kinetic energy formula

The formula for kinetic energy (KE) is $KE = \frac{1}{2}mv^2$, where $m$ is the mass of the object and $v$ is its velocity.

Step2: Identify the given values

From the problem, the mass $m = 10\space kg$ and the velocity $v = 10\space m/s$.

Step3: Substitute the values into the formula

Substitute $m = 10$ and $v = 10$ into $KE = \frac{1}{2}mv^2$:
$$KE=\frac{1}{2}\times10\times(10)^2$$

Step4: Calculate the result

First, calculate $(10)^2 = 100$. Then, $\frac{1}{2}\times10 = 5$. Finally, $5\times100 = 500$.

Answer:

The kinetic energy of the object is $500\space J$ (joules).