Recent content by Vanagib

Many thanks all :)

Homework Statement A train of total mass 1.02x10^5 kg strikes a buffer that behaves like a spring of stiffness 320kN/m with an initial velocity of 0.15m/s Calculate the maximum compression of the spring. Homework Equations P=mv The Attempt at a Solution P=mv = 15300kgm/s...

Many thanks, It's hit me now.

First question seems just fine to me Second: mgh = 1/2 mv^2 is using an energy argument instead of suvat equations to approach the problem mgh = gravitational potential energy 1/2mv^2 = kinetic energy So you assume that all potential energy is converted to kinetic - unfortunately as...

Homework Statement A block of mass 12kg slides down a slope at 5deg to the horizontal. The speed of the block at the top of the slop is 1.5ms^-1 There is a constant resistance to motion of 15N iii) Calculate the acceleration of the block in the direction of its motion iv) For how much...