A point traversed half the distance with a velocity v0. The remaining part of the distance was covered with velocity v1 for half the time, and with velocity v2 for the other half of the time. Find the mean velocity of the point averaged over the whole time of motion.
A laborer brings 2 bags of cement up to the second floor of the building. In Each bag, he applies 230 N. If the height from 1st floor to the 2nd floor is 10 m, what is the work of the laborer?
A particle leaves the 'origin with velocity u. If
it moves with an acceleration =m/v^2,where v be
the velocity at any instant, show that the
distance x travelled in time t is given by
4 cx= (3 ct+ c^2)4/3 - u^4.
A particle leaves the 'origin with velocity u. If
it moves with an acceleration -Liv being
v2
the velocity at any instant, show that the
distance x travelled in time t is given by
4 px= (3 lit+ 112)4/3 - u4.