You are arguing over a cell phone while trailing an unmarked police car by 25 m; both your car and […]
time
Suppose a rocket ship in deep space moves with constant acceleration equal to , which gives the illusion of normal […]
Suppose a rocket ship in deep space moves
A certain elevator cab has a total run of 190 m and a maximum speed of 305 m/min, and it […]
A certain elevator cab has a total run
On a dry road, a car with good tires may be able to brake with a constant deceleration of . […]
On a dry road, a car with good tires may
An electric vehicle starts from rest and accelerates at a rate of in a straight line until it reaches a […]
An electric vehicle starts from rest and accelerates
Certain mushrooms launch their spores by a catapult mechanism. As water condenses from the air onto a spore that is […]
Certain mushrooms launch their spores
2 An electron with an initial velocity enters a region of length where it is electrically accelerated as shown in the […]
An electron with an initial velocity
(a) If the position of a particle is given by , where is in meters and is in seconds, when, […]
If the position of a particle is given
At a certain time a particle had a speed of 18 m/s in the positive x direction, and 2.4 s […]
At a certain time a particle had a speed of
An electron moving along the x axis has a position given by , where is in seconds. How far is […]
An electron moving along the x axis has
4 An abrupt slowdown in concentrated traffic can travel as a pulse, termed a shock wave, along the line of cars, […]
An abrupt slowdown in concentrated traffic
The figure shows a general situation in which a stream of people attempt to escape through an exit door that […]