If it takes an object 3s to fall freely to the ground fro...
If it takes an object 3s to fall freely to the ground from a certain height, what is the distance covered by the object?
90 m
30 m
45 m
60 m
Correct answer is C
S = (1)/2gt2
S = (1)/2 x (10)/1 x 32 =5 x 9 = 45 m
Which of the following may be used to explain a mirage? i. layers of air near the road surface ha...
A metallic sphere is heated from 27°C to 200°C Without change of state. Which of the fo...
The clinical thermometer differs from other mercury-in-glass thermometers because it has I. a co...