Question

a truck has a kinetic energy of 1240 J and is traveling at 6 m/s what is the trucks mass ?

Answer 1

Answer:

68.8 kg

Explanation

kinetic energy = $\frac{1}{2} mv^{2}$

1240 = $\frac{1}{2} m 6^{2}$

1240 x 2 = 36 x m

$\frac{2480}{36}$ = m

m = 68.8 kg