Uniform Acceleration (Leaving Cert Applied Maths): Flashcards

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Uniform acceleration

Constant acceleration

Five key variables in kinematics

uu, vv, aa, tt, ss

Equation: vv, uu, aa, tt

v=u+atv = u + at

Equation: ss using average velocity

s=(u+v)t2s = \frac{(u + v)t}{2}

Equation: ss from initial conditions

s=ut+12at2s = ut + \frac{1}{2}at^2

Equation: v2v^2 without time

v2=u2+2asv^2 = u^2 + 2as

Area under velocity-time graph

Total distance travelled

Two bodies: greatest separation condition

Same velocity

Two bodies: overtaking condition

Equal distance from reference point

Acceleration for falling objects (down +ve)

+g+g

Acceleration for upward throw (up +ve)

−g-g

When to use kinematic equations

Only when acceleration is constant

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