Respuesta :
Answer:
v = 5.95 m/s
Explanation:
Given,
The mass of the baseball, m = 0.150 Kg
The kinetic energy (K.E) of the baseball, E = 118 J
The kinetic energy of a body is directly proportional to the square of its velocity. The formula for kinetic energy is given by
E = 1/2 mv² joules
Solving for v
v² = 2mE
[tex]v = \sqrt{2mE}[/tex] m/s
Substituting the given values in the above equation,
[tex]v = \sqrt{2X0.15X118}[/tex]
v = 5.95 m/s
Hence, the velocity of the baseball is, v = 5.95 m/s
Answer: 39.67
Explanation: 118 = (1/2) * 0.15 * v² 118 = 0.075 * v² v² = 1573.33 m/s
since KE = m/2*V^2 ,
then : V = √2KE/m = √20*118/1.5 = 39.67 m//sec ( 142.8 km/h ; 88.75 mph).
