- #1

Idividebyzero

- 64

- 0

**1.Use 5.98 × 1024 kg as the mass of the Earth.**

A 1680 kg meteorite has a speed of 184 m/s

just before colliding head-on with the Earth.

Determine the recoil speed of the Earth.

Answer in units of m/s.

A 1680 kg meteorite has a speed of 184 m/s

just before colliding head-on with the Earth.

Determine the recoil speed of the Earth.

Answer in units of m/s.

**2. (m1+m2)vf=m1v1i+m2v2i**

**3. used the equation for a perfectly inelastic collision in which the meteor strikes and embeds itself in the Earth causing the Earth to recoil. the Earth being more massive this recoil velocity would be insignificanly small relative to persons on Earth anyways, solved for vf by m1v1i+m2v2i/(m1+m2) taking the Earth to be at rest initially. getting 5.2e-20 which is incorrect. i suppose I am supposed to take kinetic energy into the equations but i don't see how**