Question

Kinetic energy....

Which has more a 0.0014 bullet travel @ 396m/'s or 7.1 10^7kg ocean liner travel @ 13m/'s (25 knots)?

Answer 1

The ocean liner

Step-by-step explanation:

Given that,

The mass of the bullet, m = 0.0014 Kg

The velocity of the bullet, v = 396 m/s

The mass of the ocean liner, M = 7.1 x 10⁷ Kg

The velocity of the ocean liner, V = 13 m/s

The kinetic energy is given by the formula,

K.E = 1/2 mv²

1) The kinetic energy of the bullet,

K.E = 1/2 x 0.0014 x 396²

= 109.775 J

2) The kinetic energy of the ocean liner,

K.E = 1/2 x 7.1 x 10⁷ x 13²

= 6 x 10⁹ J

Hence, the ocean liner has more kinetic energy.