3. a car is originally travelling at 15.0 meters per second on a straight horizontal road. the driver applies the brakes, causing the car to decelerate uniformly at 4.00 meters per second sqaured until it comes to rest. calculate the car's stopping distance .[ show all work , including the equations and substitutions with units ]

Identify the forces that contribute to the centripetal force on the object in each of the following examples: a. a bicyclist moving around a flat, circular track b. a bicycle moving around a flat, circular track c. a racecar turning a corner on a steeply banked curve

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.