2. The range of projectile on a downward inclined plane is __________ the range on upward inclined plane for the same velocity of projection and angle of projection.
4. The time of flight (t) of a projectile on an upward inclined plane is(where u = Velocity of projection, ? = Angle of projection, and ? = Inclination of the plane with the horizontal.)
6. If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is __________ the momentum of body having mass m2.