A speeding bullet with a speed of 582 m/s has a kinetic energy of 34,000 J. What is its mass?

A. 0.255 Kg

B. 0.505 Kg

C. 1.05 Kg

D. 2.01 Kg

E. 0.201 Kg

0.201kg

Explanation:

The formular for calculating kinetic energy is:

Ke = 1/2 * mv2

The values given are:

Ke = 34000J

V = 582m/s

m=?

34000 = 1/2 * m * 582 * 582

34000 = 1/2 * m * 338724

34000 = 169362m

To find m, divide both sides by the coefficient of m which is 169362

34000/169362 = 169362m/169362

m = 0.201kg.

Thus, the mass is 0.201kg.