Answer: 7 kg bowling ball must move with a speed of 2.8 m/s so that it has the same kinetic energy.
Explanation:
Kinetic energy is the energy possessed by a body by virtue of its motion.
[tex]K.E=\frac{1}{2}mv^2[/tex]
m = mass of object
v= velocity of the object
[tex]K.E=\frac{1}{2}\times 6kg\times (3m/s)^2=27Joules[/tex]
b) for a 7 kg bowl to have kinetic energy of 27 Joules:
[tex]27J=\frac{1}{2}\times 7kg\times v^2[/tex]
[tex]v^2=7.7[/tex]
[tex]v=2.8m/s[/tex]
Thus 7 kg bowling ball must move with a speed of 2.8 m/s so that it has the same kinetic energy
