类别 全部 - reaction - motion - forces - objects

作者:Grace Kitsteiner 9 年以前

131

Newton´s 3 Laws

Newton's three laws of motion describe the relationship between a body and the forces acting upon it. The first law, often called the law of inertia, states that an object will remain at rest or in uniform motion unless acted upon by an external force.

Newton´s 3 Laws

Newton´s 3 Laws

3rd Law: For every cation there is an equal and opposite reaction (all forces act in pairs)

Examples: 1. A balloon is pushed forward and air is released from the balloon. 2.You push against the wall and the wall pushes back against you.

2nd Law: f=mxa

Examples: 1. You are pushing a box. 2. You are pushing a car.

1st Law: an object at rest stays at rest and an object in motion stays in motion in a straight line at a certain velocity until an unbalanced force acts upon it

Examples: 1.The car stops and you keep going forward until the seatbelt stops you 2.You ar running straight and you trip on a rock.
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