Energy and its Conservation

Energy and its Conservation problem 29

A projectile with mass and at speed lands in a stationary log with mass on a horizontal smooth surface. The projectile collision with the log is central. The projectile stops in the log after as shown in the figure below.

Inelastic projectile collision with log

  • What is the velocity of the projectile and the log after the collision?

  • What percentage of kinetic energy is lost in the collision?

  • What is the average force of the projectile on the log?

  • How deep does the projectile sink into the log during the collision?


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