A 1 Kg object is dropped from rest from a helicopter at an altitude of 2000 meters?
A 1 Kg object is dropped from rest from a helicopter at an altitude
of 2000 meters. What is the velocity of the object just before it lands upon a thick bed of pillows? The top of the pillow stack is at zero altitude. If the restoring force
constant (spring constant) of the stack of pillows is 1 N/m, how far into the stack will the
object travel before it comes to a full stop? Neglect air resistance.
m.g.h = 1/2 .m.v^2 …..g=10 m/s^2
v=sqrt(2gh)
v=200 m/s
1/2.m.v^2 = 1/2.k.A^2
m.v^2 = k.A^2
1.40000 = 1. A^2
A^2 = 40000
A=200 metres