Question

1. joey is riding his bike at a pace of 11 m/s. if his mass is 24.9 kg, how much kinetic energy does he have? 3410 j 23 j 273.9 j 1506.5 j

Explanation:

Step1: Recall kinetic - energy formula

The formula for kinetic energy is $K = \frac{1}{2}mv^{2}$, where $m$ is the mass and $v$ is the velocity.

Step2: Substitute given values

Given $m = 24.9\ kg$ and $v=11\ m/s$. Substitute into the formula: $K=\frac{1}{2}\times24.9\times(11)^{2}$.

Step3: Calculate $(11)^{2}$

$(11)^{2}=121$. Then the equation becomes $K=\frac{1}{2}\times24.9\times121$.

Step4: Calculate $\frac{1}{2}\times24.9$

$\frac{1}{2}\times24.9 = 12.45$. So $K=12.45\times121$.

Step5: Calculate the final result

$12.45\times121 = 1506.45\approx1506.5\ J$.

Answer:

$1506.5\ J$