Calendar: 1860-1861 Page 494

APPLIED SCIENCES 495 IV -Smiamt'cS AVhat is meant by the question of matter State and ex plain the first law of motion What do you understand by the momentum of body in motion Explain the equation Mg State the unit of mass If force which is capable of supporting lbs act for three seconds upon body of 10 lbs weight to move it along smooth horizontal plane what momentum will it generate Prove the formula gt2 How long does body take to fall from the top of tower 150 feet high body thrown up with velocity of 100 feet in second reaches the top of tower in 2J seconds Find the height of the tower Explain how the second law of motion assists you in solving this question When body falls down smooth inclined plane find the time of descent and the velocity acquired What law of motion do you assume in this investigation Explain fully body is dropped from height of 400 feet and after it has fallen through 50 feet another is thrown down after it and the two bodies come to the ground at the same time Find the velocity of projection of the second body The elevation of plane is 25 30' body in falling from the top to the bottom acquires velocity of 450 feet per second Find the length of the plane What space does falling body describe in the fourth second and what velocity does it acquire in falling through 100 feet 10 How much work is there stored up in body of 10 lbs weight which has fallen through 100 feet 11 body is projected at an elevation of 10 degrees with velocity of 60 feet per second find the range upon horizontal plane through the point of projection 12 If the horizontal range of projectile be to the greatest height it reaches as to find the angle of projection