In the figure, a Mass m1 is connected to another mass m2 by a massless string over a frictionless pulley, when m1 slides on a surface by effecting of m2. M1= 2kg. M2= 1.5 kg

if the kinetic friction coefficient between m1 and the surface is 0.35

1- draw the free-body diagram of the forces acting on m1

2- calculate the acceleration of m1 on the surface.

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.

During a car accident, a 125kg driver is moving at 31m/s and in 1.5s is brought to rest by an inflating air bag. what is the magnitude of the change in momentum to the driver

Which of these statements best explains how the hydrosphere interacts with the atmosphere to affect global climate? mountains block rain clouds and cause changes in global rainfall and evaporation. humans burn fossil fuels to produce greenhouse gases which cause global warming. humans cut down trees which affects the amount of oxygen in different parts of the globe. greenhouse gases, like carbon dioxide, dissolve in oceans and prevent global warming.