A 1500 kg car is traveling at 20 m/s and the driver slams on the brakes. If the car’s brakes can apply a 3000 Newton force to stop the car. How much time is needed for the car to stop? How much distance will the car travel before the car stops?

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Positrons are spontaneously emitted from the nuclei of

Suppose that a mass of 2 kg is attached a spring whose spring constant is 50. the system is damped such that b = 12 . the mass is set in motion with an initial velocity of -8 m/s at a position 0 meters from equilibrium. set up and solve a differential equation that models this motion. write your solution in the form a cos ( ω t − α ) where α is a positive number. use your solution to fill in the information below: what is the amplitude of the motion? what is the value of ω ? what is the phase shift?