The rotational effect of a force is called torque.it is the cause of rotation or angular deceleration
τ=rXF
where
τ = F r sin @
hope it helps
Given :
Height from which ball is dropped , h = 40 m .
Acceleration due to gravity , g= 10 m/s² .
Initial velocity , u = 0 m/s .
To Find :
Velocity when ball covered 20 m and velocity when it hit the ground .
Solution :
Now , height when ball covered 20 m distance is , 40 - 20 = 20 m .
By equation of motion :

Now , distance covered when body reaches ground is , 40 m .
Putting value h = 40 m in above equation , we get :

Hence , this is the required solution .
<span><span>Work from Days:<span><span><span>If A can do a piece of work in n days, then A's 1 day's work =</span></span></span></span><span /></span>

<span><span>Days from Work:<span><span>If A's 1 day's work =</span></span></span></span>

<span><span><span><span>,<span>then A can finish the work in n days</span></span></span></span><span>Ratio:If A is thrice as good a workman as B, then:Ratio of work done by A and B = 3 : 1.Ratio of times taken by A and B to finish a work = 1 : 3.</span></span>
Wassily Kandinsky invented abstract geometry :) have a good week
Answer:
Weightlessness, condition experienced while in free-fall, in which the effect of gravity is canceled by the inertial (e.g., centrifugal) force resulting from orbital flight. The term zero gravity is often used to describe such a condition.