Prove that when a shot is projected from a gun at any angle of elevation, the
shot as seen from the point of projection will appear to descend past vertical
target with uniform velocity.
18. A ball is projected with a velocity u at an elevation a from point distance from
a smooth vertical wall, it returns to the point of projection. Prove that
2
sin 2
gd
e
u gd
where e= coefficient of restitution. Hence find the maximum d
for which the ball can return to the point of projection.
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
You have rated this answer /10
Browse free questions and answers by Chapters
- 1 Thermodynamics
- 2 Gravitation
- 3 Electromagnetic Waves
- 4 Communication Systems
- 5 Laws of Motion
- 6 Current Electricity
- 7 Work, Energy and Power
- 8 Kinematics
- 9 Physics and Measurement
- 10 Rotational Motion
- 11 Properties of Solids and Liquids
- 12 Kinetic Theory of Gases
- 13 Oscillations and Waves
- 14 Electrostatics
- 15 Magnetic Effects of Current and Magnetism
- 16 Electromagnetic Induction and Alternating Currents
- 17 Optics
- 18 Dual Nature of Matter and Radiation
- 19 Atoms and Nuclei
- 20 Electronic Devices