Question Text
Question 2 :
The gravitational force between two bodies is $6.67\times 10^{-7}N$ when the distance between their centres is 10 m. If the mass of first body is 800 kg, then the mass of second body is :<br/>
Question 5 :
If the distance between two particles is halved, the gravitational force increases by
Question 8 :
A ball is thrown upward with a velocity of 100m/s it will reach the ground after :-
Question 9 :
Which of the following is also called Universal law of gravitation?
Question 10 :
SI unit of G is $Nm^{2}kg^{-2}$.Which of the following can also be used as the SI unit of G?<br>
Question 11 :
A particle is projected vertically upwards with velocity $\displaystyle 40{ ms }^{ -1 }$. Find the displacement and distance travelled by the particle in 6 s.<br/>[take $\displaystyle  g =10 m/s^{2}$]
Question 14 :
A particle is projected up with a velocity of 20 m $s^{-1}$ from a tower of height 25 m. Its velocity on reaching the ground is _________ m $s^{-1}$.<br/>