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A car traveling on a road at a speed of 70km/h exits onto an ice-covered exit ramp. wishing to stop , he applies his brakes until his automobile comes to rest .knowing that the magnitude of the total acceleration of the automobile cannot exceed 10 ft/s^2, determine the minimum time require for the automobile to come to rest and the distsnce it travels on the exite ramp during that time if the exit ramp (a) is straight (b) has a constant radius of curvature of 800 ft.
Solve each part assuming that the driver applies his brakes so that dv/dt , during each time interval , (1)remains constant ,(2) varies linearly ?
two events occur at the same time in an inertial frame s and are separated by a distance of 1 km along the x axis. what
a 75 g bungee cord has an equilibrium length of 1.2 m. the cord is stretched to a length of 1.8 m then vibrated at 20
A car of mass 1000 kg experiences a net force of 9500 N while decelerating from 30 m/s to 15.9 m/s. How far does it travel while slowing down?
In a very large closed tank, the absolute pressure of the air above the water is 5.22 x 105 Pascal. Compute the speed at which the water leaves the nozzle
what is the time in seconds it takes for a 10-microm diameter dust particulate to settle from the ceiling vent to the
it takes the elevator in a skyscraper 4.0 to reach its cruising speed of 10 . a 60 passenger gets aboard on the ground
A jogger takes 49 minutes to run 22 times around a track that measures 0.25 mile. What is her average velocity in mph and m/s
Blood flows through a vein at a rate of 3.5 mL/s. Among other things, it contains a protein with a molecular weight of 63,000, at a concentration of 2.9 g per 150 mL. How many grams of this protein are carried by the blood each second?
Suppose a rocket ship in deep space moves with constant acceleration equal to 9.80 m/s2, which gives the illusion of normal gravity during the flight. How far will it travel in so doing
A speaker at the front of a room and an identical speaker atthe rear of the room are being driven at 421 Hz by the same sound source. How many beats does the student hear per second
A fountain designed to spray a column of water 10 m into the air has a 3 cm diameter nozzle at ground level. find the necessary absolute pressure the pump must exert
The wavelength of red helium–neon laser light in air is 632.8 nm. What is its frequency? What is its speed in the glass?
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