Question

a bullet of mass 20g strikes a target with a velocity 100m/s and comes to rest 50percent kinetic energy of the bullet

Answer 1

is the answer 50 joule?

Answer 2

Dear Student,

◆ Complete question -

Q. A bullet of mass 20g strikes a target with a velocity 100m/s and comes to rest. 50% kinetic energy of the bullet raises its temperature by 25 C. Calculate specific heat of material of bullet.

● Answer -

s = 100 J/K

● Explanation -

Given that 50% kinetic energy of the bullet raises its temperature by 25 C.

50/100 × (1/2 mv^2) = m × s × T

1/4 v^2 = s × T

s = v^2 / (4 × T)

s = 100^2 / (4 × 25)

s = 100 J/K

Hence, specific heat of material of the bullet is 100 J/K.

Thanks dear. Hope this helps you...