Question

the speed of a bullet of mass is 40gram is 216km/h what is the kinetic energy in joule

Answer 1

V = 216,000m/h * (1h/3600/s) = 60m/s.

mass = 40g / 1000g/kg = 0.04kg.

KE=0.5mV^2=0.5 * 0.04 * 60^2=72 Joules.

Answer 2

60×72×4=16800

Answer 3

K.E

Answer 4

what is the kinetic energy of a bullet of mass 40g mounting with a speed of 250kmh

Answer 5

I said 20 g not 40 g

Answer 6

72 joules