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6 Newtons Second Law
Newton's second law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed by the equation F=ma, where F is the net force, m is the mass of the object, and a is the acceleration. The document provides an example problem of calculating the force needed to push a car with a mass of 1000 kg and an acceleration of 0.05 m/sec^2. Using the equation, the force is calculated to be 50 N.
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Explains Newton's 2nd law of motion, defining acceleration's dependence on mass and force.
Describes a practical example of calculating force using the mass of a car and its acceleration.
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6 Newtons Second Law
- 1. Newton's 2ndLaw
- 2. Newton's second law(the law of acceleration) The acceleration of an object depends on the mass of the object and the amount of force applied.
- 3. Newton's second lawMass - the acceleration decreases as mass increases (see fig 4 pg 47) Force - acceleration increases as force increases. (see fig 4 pg 47)
- 4. Newton's 2nd LawForce= mass x acceleration OR F= ma m=F/a a=F/m
- 5. Mike's car, whichhas a mass of 1,000 kg, is out of gas. Mike is trying to push the car to a gas station, and he makes the car go 0.05 m/sec 2 . Using Newton's Second Law, compute how much force Mike is applying to the car.
- 6. Force= mass xacceleration Or F= ma Mass=1000 kg Acceleration= 0.05 m/sec 2
- 7. F= ma F=(1,000 kg) x 0.05 m/sec 2 F= 50 kg . m/sec 2 or F= 50 N (1 Newton= kg x m/sec 2)
- 8. Open to page48 Complete 1-3 9.8 m/sec 2 50,000 N 3) 350 N