Solutions: to worksheet-5 Force and Laws of Motion Objective Problems: 1.(B)ĥ. What force must be applied to the gun so that the gun is kept in position ? The machine gun fires 35 g bullets at the rate of 400 bullets per minute with a speed of 400 m/s. Find the recoil velocity of the hunter.Ħ. A hunter of 45 kg is standing on ice fires a bullet of 100 gram with a velocity of 500 m/s by a gun ofĥ kg. State any three applications of impulse in our day to day life.ĥ. State the principle of conservation of linear momentum, and derive it.Ĥ. Give two examples in support of this law.ģ. Explain one application of law of conservation of momentum.Ģ. The force exerted by the surface of the table on book will be:ġ. A book of weight 10 N is placed on a table. China wares and glass wares are packed with soft material when transported. A rocket is ejecting 0.05Kg of gases per second at a velocity of 400m/s. If he walks towards the shore the boat will:ĥ.
A man is standing on a boat in a still water. If the action and reaction force were to act on the same body:Ĥ. A bullet in a motion hits and gets embedded in a solid resting on a frictionless table. Principle of conservation of momentum, Illustrations on conservation of momentum.Newton’s Third law of motion – Introduction, Explanation, Examples.Impulse – Introduction, Definition, Impulse and momentum, Application of impulse in daily life.CBSE Worksheet for chapter-5 Force and Laws of Motion class 9 Worksheet For class 9įind CBSE Worksheet for chapter-5 Force and Laws of Motion class 9įor other CBSE Worksheet for class 9 Science check out main page of Physics Wallah.