Physics Lessons
Newton's Laws
Newton's 2nd Law: How to calculate Force

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Newton's 2nd law: How to calculate mass

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Newton's 2nd law: how to calculate acceleration

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Calculating Force
F = ma Force = mass x acceleration How much force is needed to accelerate a 66 kg skier at 2 m/sec²? Steps:1. Identify the variablesF= ? m= 66 kga= 2 m/sec² 2. Plug the numbers into the formulaF=(66)(2) 3. Multiply mass and acceleration and you have found the force!F=132NCalculating Mass
F = ma Force = mass x acceleration A force of 250 N is applied to an object that accelerates at a rate of 5 m/sec² . What is the mass of the object? Steps: 1. Identify the variablesF= 250 N m= ?a= 5 m/sec² 2. Plug into the formula250 = m5 3. Isolate the m (divide by 5, this will cancel it out)250 = (m5)/5 4. Whatever you do to one side you need to do to the other side. Divide the 250 by 5. 250/5 = (m5)/5 5. Calculate and you have solved for mass!50 kg = mCalculating Acceleration
F = ma Force = mass x acceleration What is the acceleration of a 50kg object pushed with a force of 500N? Steps:1. Identify the variablesF= 500 Nm= 50 kga= ? 2. Plug into the Formula500 = 50a 3. Isolate the a (divide by 50, this will cancel it out)500 = (50a)/50 4. Whatever you do to one side you have to do to the other side, divide the 500 by 50.500/50 = (50a)/50 5. Calculate and you have solved for acceleration!10 m/s² = a