Meteorites are rocks that enter Earth’s atmosphere and only partially burn up during entry, so that the remaining mass lands on Earth’s surface. The speeds with which meteorites strike Earth’s surface depend on their point of origin. If they were originally small rocks that orbited Earth, their impact speed might be as low as 10.0 km/s. If the small rocks orbited the sun, the speed with which they collide with Earth could be as large as 70.0 km/s. Suppose a meteorite collides with Earth with a force of –6.41 10 12 N. a. What is the mass of the meteorite if its impact speed is 10 km/s, so that it has an acceleration of approximately –1.00 10 8 m/s 2