t = 20 s
A local train leaves station A; it gains speed at the rate of 1 ms ^−2 for first 6 s and then at the rate of 1.5 ms ^ −2 until it has reached the speed of 12 m/s. The train maintains the same speed until it approaches station B; brakes are then applied, giving the train a constant deceleration and bringing it to a stop in 6 s. If the total running time of the train is 40 s. Find (a) the distance between stations A and B. (b) Draw acceleration-time, velocity-time, and the position-time relation of motion.
27
Aug
A local train leaves station A; it gains speed at the rate of 1 ms ^−2 for first 6 s and then at the rate of 1.5 ms ^ −2 until it has reached the speed of 12 m/s. The train maintains the same speed until it approaches station B; brakes are then applied, giving [...]
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(b) In a motion diagram ,
/=30 s ,
and acceleration of the spider at the five times: t=2.5 s ,
and t=37.5 s. ,
show the position ,
t = 10 s ,
t = 20 s ,
The figure is a graph of the coordinate of a spider crawling along the x-axis. (a) Graph its velocity and acceleration as functions of time ,
velocity ,
The figure is a graph of the coordinate of a spider crawling along the x-axis. (a) Graph its velocity and acceleration as functions of time, (b) In a motion diagram, show the position, velocity, and acceleration of the spider at the five times: t=2.5 s, t = 10 s, t = 20 s, /=30 s, and t=37.5 s.
27
Aug
The figure is a graph of the coordinate of a spider crawling along the x-axis. (a) Graph its velocity and acceleration as functions of time, (b) In a motion diagram, show the position, velocity, and acceleration of the spider at the five times: t=2.5 s, t = 10 s, t = 20 s, /=30 s, [...]
Tags:
(b) In a motion diagram ,
/=30 s ,
and acceleration of the spider at the five times: t=2.5 s ,
and t=37.5 s. ,
show the position ,
t = 10 s ,
t = 20 s ,
The figure is a graph of the coordinate of a spider crawling along the x-axis. (a) Graph its velocity and acceleration as functions of time ,
velocity ,