- #1

IAmSparticus

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**1. A projectile (mass = 0.17 kg) is fired at and embeds itself in a target (mass = 2.43 kg). The target (with the projectile in it) flies off after being struck. What percentage of the projectile's incident kinetic energy does the target (with the projectile in it) carry off after being struck?**

**2. (m1 + m2)Vf = m1Vi1 + m2Vi2**

It is implied that the initial velocity of the target is 0 m/s, so the right side of the equation can be rewritten as m1Vi1+0.

Kinetic Energy= 1/2*mass*speed^2

It is implied that the initial velocity of the target is 0 m/s, so the right side of the equation can be rewritten as m1Vi1+0.

Kinetic Energy= 1/2*mass*speed^2

**3. Since the objects stick together, this is an inelastic collision. The total momentum before the collision and the total momentum after the collision are not going to be equal to each other. However, since we don't know the final velocity of the combined target and projectile or the initial velocity of the bullet, how are we supposed to figure this out?**