8 s
4 s
16 s
10 s
Correct answer is B
for a body projected at an angle θ to the horizontal, the time of the flight is given by T = (2u sin θ)/g =(2x 40)x sin (30)/10 =(2 x 40) x (0.5)/10 = 4.0secs.
Humidity is used to describe the amount of ...
If the temperature of a resistance wire is gradually increased, its resistance will ...
A magnetic needle is suspended first at the earth's north magnetic pole and then at a point on t...
In a reverse biased junction diode, current flows in by ...
Which of the following statements is the major advantage of nuclear fusion over nuclear fission? ...
The design of the thermostat of an electric iron is based on the ...
Which of the following substance is not a good conductor of electricity? ...
The limiting frictional force between two surfaces depends on I. the cohesive force of the mat...