A body of mass 5 kg moving at 4 m/s has kinetic energy of:
A
80 J
B
40 J
C
20 J
D
10 J
Correct Answer: Option B — 40 J
Explanation:
Kinetic energy equals half of mass multiplied by velocity squared, so 0.5 times 5 kg times 16 (4 squared) equals 40 joules, representing the...
Kinetic energy equals half of mass multiplied by velocity squared, so 0.5 times 5 kg times 16 (4 squared) equals 40 joules, representing the energy the body possesses due to its motion.