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`        A body starts slipping down on an incline plane and moves half meter in half second .How long will it take to next half metre?`
7 years ago

147 Points
```										Dear pallavi
motion for 1/2 meter
so s= ut +1/2 a t2
1/2 =0+1/2 * a *(1/2)2
a=4 m/sec2
now motion for 1 meter
s= ut +1/2 a t2
1=0+ 1/2 * 4 *t2
t=1/ √2
so time taken for next 1/2 meter is  t'=1/ √2   -1/2  sec
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```
7 years ago
Vineeth Chennabhoina
14 Points
```										First we find the acceleration of the body. For the first half second, the distance covered is half a meter. As we solve s= ut + 1/2at2, we get a=4m/s2. Intially the body didn’t have any velocity, but as we go through the first half second, the body gains a velocity v= u +at , as this is the velocity the body gains at the end of first half second and it has no initial velocity, substituting a=4 and t=0.5, we get v=2 m/s. Finally, the time taken for the second half second will be s = ut + ½at2. Here s is 0.5, u=2m/s, a=4m/s. We get a quadratic in t. Which would be4t2 + 4t – 1 = 0 Solving by the finding roots of x, we get 1.656/8, which is 0.207 seconds, rounding it off to 0.21 seconds.
```
10 months ago
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