A body of mass 20g projected vertically upwards in vacuum...
A body of mass 20g projected vertically upwards in vacuum returns to the point of projection after 1.2s. [g = 10ms\(^{-2}\)]. Calculate the speed of projection
1.2ms-1
6.0ms-1
12.0ms-1
0.6ms-1
Correct answer is C
V = u - gt
u = v + gt
= 0 + 10 x 1.2
= 12ms\(^{-1}\)
A 20kg mass is to be pulled up a slope inclined at 30° to the horizontal. If efficiency of ...
A lorry accelerates uniformly in a straight line with acceleration of \(4ms^-2\) and covers a ...
Which of the following elements is the best absorber of X-rays? ...
Ether produces a cooling effect when it is poured on the hand because it has ...
Which of the following statements about matter is not correct? ...