What is the kinetic energy of a softball traveling at a speed of 30 moles per seconds if the baseball has a mass of 0.13 kg?

Answer 1

30 miles per second? Covert to meters per second

30 miles/sec =(1609 meters/1 mile)

= 48270 m/s ( very fast!)

KE = 1/2mV^2

KE = 1/2(0.13 kg)(48270 m/s)^2

1.51 X 10^8 Joules

Answer 2

First of all, before we jump in, we notice that this is a fine Physics question, but a poor

representation of anything real, since the speed of the ball is 108,000 miles per hour !

But OK. Be that as it may, although it never was, here we go:

Kinetic energy = 1/2 (mass) x (speed)2

30 miles per second = 48,280.32 meters per second

Kinetic energy = 1/2 (0.13) (48,280.32)2 = 151,514,304.5 joules

Whoever it was that pitched that ball, sign him up!

That energy is roughly equivalent to

-- 36,000 food Calories

-- the energy in 71.1 pounds of TNT

-- the energy in 44.5 pounds of standard dynamite

-- the kinetic energy of a thousand 16-lb Bowling balls dropped from a height of 1.3 miles