A woman of mass 60kg is standing in a lift at a shopping centre a ) the lift is at rest

1. state the value of the weight of
the woman

2. state the value of the force exerted on the woman by the floor of the lift

b ) the lift accelerates upwards at 2.5 m / s². calculate the force exerted on the woman by the floor when the lift is accelerating

c ) the lift reaches a steady upward speed. state the value of the force exerted on the woman by the floor at this steady speed

Amass has an acceleration of 10- 2t. what is its velocity and displacement if it started at x- 4m and the initial velocity was 8m/s? at what time does it have 0 velocity? graph all graphs.

However, had it been a real sound, the sound's pitch would have been increased by the doppler effect, since the falcon was moving the source of the sound. perpendicular to away from towards at the same speed as

Aparticle of mass m is placed in a one-dimensional box of length l. the box is so small that the particle’s motion is relativistic, so that e p2/2m is not valid. (a) derive an expression for the energy levels of the particle using the relativistic energy–momentum relation and the quantization of momentum that derives from connement. (b) if the particle is an electron in a box of length l 1.00 1012 m, nd its lowest possible kinetic energy. by what percent is the nonrelativistic formula for the energy in error?