Une pierre chute du toit d in immeuble de 5 etage(h=10 metres de haut) et met 2 secondes pour atteindre le sol. V=h t=10/2=5m/s est une vitesse

Amachine, modeled as a simple spring-mass system, oscillates in simple harmonic motion. its acceleration is measured to have an amplitude of 5,000 mm/s with a fre- quency of 10 hz. compute the maximum displacement the machine undergoes during this oscillation.

Which is not a step in the rock cycle?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity