7.6- MORE CACULATIONS ON MOTION ALONG A STRAIGHT LINE

Question 1

When an object is released from rest, falling, then hitting a bed of sand, what are the two stages of motion?

Answer 1

1. falling motion due to gravity: acceleration = g

2. deceleration in sand: initial velocity = velocity of object just before impact

Question 2

Is the acceleration the same in both the stages of motion when an object falls and hits a bed of sand?

Answer 2

no

Question 3

What is the link between the two stages of motion when an object is released from rest, falls and hits a bed of sand?

Answer 3

velocity at the end of the first stage is same as velocity at start of second stage