An object of mass 80 kg moving with velocity 2 ms -1 hit by collides with another object of mass 20 kg moving with velocity 4 ms -1. Find the loss of energy assuming a perfectly inelastic collision

Question

An object of mass 80 kg moving with velocity 2 ms -1 hit by collides with another object of mass 20 kg moving with velocity 4 ms -1. Find the loss of energy assuming a perfectly inelastic collision (A) 12 J (B) 24 J (C) 30 J (D) 32 J

Tardigrade Admin · Accepted Answer

Loss in kinetic energy Δ k=(m1 m2/2(m1+m2))(u1-u2)2 Δ k=32 J

Q. An object of mass $80 k g$ moving with velocity $2 m s^{- 1}$ hit by collides with another object of mass $20 k g$ moving with velocity $4 m s^{- 1}$ . Find the loss of energy assuming a perfectly inelastic collision

12 J

24 J

30 J

32 J

Loss in kinetic energy
$Δ k = \frac{m _{1} m _{2}}{2 ( m _{1} + m _{2} )} (u_{1} - u_{2})^{2}$
$Δ k = 32 J$

Q. An object of mass 80kg moving with velocity 2ms−1 hit by collides with another object of mass 20kg moving with velocity 4ms−1. Find the loss of energy assuming a perfectly inelastic collision