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Newton's second law, which states that the force F acting on a body is equal to the mass m of the body multiplied by the acceleration a of its centre of mass, F = ma, is the basic equation of motion in classical mechanics.

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Newton's second law, which states that the force F acting on a body is equal to the mass m of the body multiplied by the acceleration a of its centre of mass, F = ma, is the basic equation of motion in classical mechanics.

GCSE Maths - How to Rearrange Formulas #48 - YouTube YouTube Start of suggested clip End of suggested clip And just subtract 4 from both sides. Giving us y minus 4 equals 3x. And to get rid of the 3 we justMoreAnd just subtract 4 from both sides. Giving us y minus 4 equals 3x. And to get rid of the 3 we just divide both sides by 3. But importantly it's the whole of the y minus 4 that we're dividing by 3.

We have, v = u + at. Hence, we can write t = (v-u)/a. Also, we know that, Distance = average velocity × Time. Therefore, for constant acceleration we can write: Average velocity = (final velocity + initial velocty)/2 = (v+u)/2. Hence, Distance (s) = [(v+u)/2] × [(v-u)/a]

Equations of Motion VariableEquationVelocityv=u+atDisplacement with positive accelerations=ut+21at2Displacement knowing initial and final velocitiess=21(u+v)tVelocity squaredv2=u2+2as

To rearrange an equation so that another variable becomes the subject, perform the same operations on both sides of the equals sign so that eventually this variable is by itself on the left hand side. Performing the same operations on both sides makes sure that the left hand side is always equal to the right hand side.