Suppose a 0.04-kg car traveling at 2.00 m/s can barley break an egg. What is the minimum speed a 0.08 -kg car would need to have in order to the break the egg

Plss anybody know how to do this? ? i need the answers from a through d

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

Ahot-air balloon takes off from the ground traveling vertically with a constant upward acceleration of magnitude g/4. after time interval δt, a crew member releases a ballast sandbag from the basket attached to the balloon. how many seconds does it take the sandbag to reach the ground? (express your answer in terms of δt)