1.4 newtons 2nd 3rd law
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Newton's second law of motion states that the force on an object is equal to its mass multiplied by its acceleration. This means that greater force results in greater acceleration, and greater mass results in less acceleration for the same amount of force. For example, if the same force is applied to a car and a truck, the truck will accelerate more slowly due to its greater mass. Newton's second law can be expressed by the equation F=ma, where F is force, m is mass, and a is acceleration.
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3. Newton's Third Law of Motion states that for every action force there is an equal and opposite reaction
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Newton's laws of motion govern the motion of massive bodies. Newton's first law states that objects at rest tend to stay at rest and objects in motion tend to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force. Newton's second law states that the acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. Newton's third law states that for every action, there is an equal and opposite reaction.
Force motion-magnetism
The document discusses physics concepts related to forces and motion. Part 1 covers forces, including defining a force, balanced and unbalanced forces, and Newton's laws of motion. Part 2 discusses motion concepts such as position, speed, velocity, and how to calculate speed. Key ideas are that forces cause motion or changes in motion, and that balanced forces result in no net force while unbalanced forces do result in a net force and acceleration.
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1.4 newtons 2nd 3rd law
- 1. Newton’s 2nd Law of Motion “The force on an object is directly proportional to the product of its mass and acceleration.” Newtons 2nd law connects the mass of an object, how much force is applied to it and how fast it accelerates/decelerates.
- 2. Newton’s 2nd Law of Motion • If I push a car with 50N of force and it accelerates at 5m/s, does that mean that if I push on a truck with the same force, it too will accelerate at 5m/s?
- 3. Newton’s 2nd Law of Motion F = ma (i.e. Force = mass acceleration) or m F a a F m
- 4. Fa (Constant m) Fm (Constant a) a1/m (Constant F) Force is proportional to acceleration. This means if one increases, so too does the other. If I push harder, I would expect it to accelerate more. Force is proportional to mass. This means if one increases, so too does the other. If I increase the mass of the object, I would expect to need more force to make it move. Acceleration is inversely proportional to mass. This means if one increases, the other decreases. If I make a car lighter, I would expect it to accelerate faster. This is why the mass of racing cars is so important.
- 5. Newton’s 3rd Law of Motion “Every action has an equal and opposite reaction.”
- 6. • The cannon exerts a force on the cannonball. • The cannonball exerts a force on the cannon. This means if object A is pushed with a force of 5N, it pushes back with 5N. • Chuck Norris punches you in the face. • Your faces punches chuck Norris’ fist!
- 7. Newton’s 2nd law explained
- 8. For your viewing pleasure….or torment
- 9. Mind Blower • If you jump off the ground, you are pushing yourself away from the earth, which means the earth is also pushing itself away from you. So when you jump you should push the earth off its axis right? Person excerts force against earth: Mperson = 80kg Acceleration = 3ms-2 F = m x a = 240N Earth excerts force against person: Equal force = 240N Mearth = 5.972x1025 kg Therefor aearth=f/m aearth = 4.01x10-23 ms-2
- 10. This is exactly why you feel recoil when firing a gun. So if a gun produces 600N of force when you pull the trigger, why doesn’t it shoot the gun backwards at a high speed like the bullet? Answer: Newtons second law - the masses are different. Same force, different mass = different acceleration.