Physics:-
1) what is conservation of momentum?
2) what is relative density?
3) what is archimedes principles?
4)Derive s=ut+1/2atsquare using graphical method
5) state universal law of gravitation.
6) write two difference between mass and weight of body.
7) what is free fall?
8) state and explain Newton's second law of motion.
9) state any two difference between thrust and pressure.
10) write a hundred word on uniform circular motion.
Anybody please solve these qualities......
Answers
Answer:1. Unless an unbalanced torque is applied on a rotating body, angular momentum of a rotating body remains constant.
5. Universal law of gravitation states that "every particle of matter attract every other particle of matter with a force which is directly proportional to the product of their masses and inversely proportional to square of distance between them."
6. mass is amount of matter contained in a body but the weight is a force exerted by the gravity on a body
Mass of a body remains constant but the weight varies from place to place
8. Newton's second law of motion states that acceleration increases as the force increases and acceleration decreases as the mass increases.
a=f/m or f=ma
9. thrust is force acting perpendicular to the surface and pressure is force acting per unit area
10.uniform circular motion is circular motion which moves with constant speed.
Explanation: