Question

How much kinetic energy has 5 gram bullet speeding at 100 m/s

Answer 1

Answer: 25J

Step-by-step explanation:

K.E = $\frac{1}{2}$m$v^{2}$

Where ;

m = mass in kg

v = speed

Given:

m = 5g = 0.005kg ( we divided by 1000 to convert g to kg)

v = 100 m/s

Therefore :

K.E = $\frac{1}{2}$ x 0.005 x $100^{2}$

K.E = 25 Joules