Tuesday, April 10, 2012

Harry Potter decides to take a vacation in beautiful Fresno. He flies on his magic broom with a constant velocity of 6 m/s. How far does he move in...

Distance traveled is a function of speed and time and is given as their product. That is,


distance = speed x time


Here, the velocity of Harry's magic broom is given as 6 m/s and he flies for a total duration of 1 sec. Thus, the distance flown by Harry on his magic broom is:


distance traveled = speed x time = 6 m/s x 1 s = 6 m.


Acceleration is the rate of change of velocity and is given as:


acceleration = dv/dt = `(v_2 - v_1)/(t_2 - t_1)`


where, v1 and v2 are the velocities at time t1 and t2. Here, harry's magic broom is flying at a constant velocity, that is, the velocity stays constant. And hence, the acceleration of Harry's magic broom is 0 m/s^2.



Hope this helps. 

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