show that newtons first and third law of motion are contained in the second law
Answers
Answer:
Both the first and third laws may be mathematically derived from the second law, as we will show. ... If that point or interface is treated as a "body" of mass zero, then Newton's second law tells us thatFnet=0a, soFnet= 0. So the net force on a body of zero mass is always zero, whatever forces act upon it.
Answer:
☞Rockets can propel themselves through the nothingness of space because of two fundamental laws of physics: Newton’s Third Law and the Conservation of Linear Momentum.
☞Both ideas are essential to understanding how nearly everything in the universe moves.
☞When an ice skater takes off from a dead stop, she digs her blade into the ice and the ice pushes back with an equal and opposite force, sending her gliding across the rink.
☞When a cannon is fired, the cannonball goes hurtling through the air while the cannon recoils backward in response.
☞Both of these principles stem from the same general idea: that the universe likes to keep everything in balance.