A Car and Driver are traveling at a velocity of 15 milliseconds the car rear ends truck in front of them and comes to a complete stop the driver heads with a mass of 4 kilograms continuing moving at 15 milliseconds the airbag is deployed and brings to add to complete stop at 0.08 seconds what is the net force acting on the driver's head?

What are the applications of electromagnetic waves

Does heating a metal wire increase or decrease its electrical resistance? why?

Asailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5m/s2 for 4s. after the wind stops, the sailboat is traveling to the left with a velocity of 3.0m/s.assuming the acceleration from the wind is constant, what was the initial velocity of the sailboat before the gust of wind? answer using a coordinate system where rightward is positive.