Answer:
Bullet has more kinetic energy then baseball.
Explanation:
Mass of the bullet , m = 150 g = 0.150 kg
Velocity of the bullet = v = 440 m/s
Kinetic energy =[tex]\frac{1}{2}\times mass\times (velocity)^2[/tex]
Kinetic energy of the bullet = K.E
[tex]K.E=\frac{1}{2}mv^2=\frac{1}{2}\times 0.150 kg\times (440 m/s)^2[/tex]
[tex]=14,520 Joules[/tex]
Mass of the baseball, m' = [tex]\frac{51}{4} oz[/tex]= 0.36146 kg
(1 ounce = 0.0283495 kg)
Velocity of the baseball= v' = 105.1 mph
1 mile = 1609.34 m
1 hour = 3600 seconds
[tex]v'=\frac{ 105.1\times 1609.34 m}{3600 s}=46.98 m/s[/tex]
Kinetic energy of the baseball = K.E'
[tex]K.E'=\frac{1}{2}m'v'^2=\frac{1}{2}\times 0.36146 kg\times (46.98 m/s)^2[/tex]
[tex]=398.83 Joules[/tex]
14,520 Joules > 398.83 Joules
K.E > K.E'
Bullet has more kinetic energy then baseball.
