An arrow is shot through an apple. If the 0.1 kg arrow changes speed by 10 m/s during the collision (from 30 m/s to 20 m/s) and the apple goes from rest to a speed of 2 m/s during the collisions, then the mass of the apple must be Question 9 options: 0.2 kg 0.5 kg 0.8 kg 0.4 kg 2 kg