Question

always use significant figure rules. remember that these rules apply to all numbers that are measurements.

• in working this problem, assume the value of \g\ to be 9.8 m/s² with two (2) significant digits unless otherwise stated.

calculate the kinetic energy in joules of a 10 g bullet moving at 300 m/s.
j
15
45
900
450

Explanation:

Step1: Convertir la masa a kilogramos

La masa \( m = 10\ g=10\times10^{- 3}\ kg = 0.01\ kg\)

Step2: Aplicar la fórmula de energía cinética

La fórmula de energía cinética es \(K=\frac{1}{2}mv^{2}\). Sustituyendo \(m = 0.01\ kg\) y \(v = 300\ m/s\)

$$
LATEXBLOCK0
$$

Answer:

450 J