Which one of the following expressions correctly gives the average acceleration of a…

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

Which one of the following expressions correctly gives the average acceleration of a body whose velocity changes from v1v_1 at time t1t_1 to v2v_2 at time t2t_2? (a) v2+v1t2−t1\dfrac{v_2+v_1}{t_2-t_1} (b) v2−v1t2+t1\dfrac{v_2-v_1}{t_2+t_1} (c) v2−v1t2−t1\dfrac{v_2-v_1}{t_2-t_1} (d) v2−v1t2+t12\dfrac{v_2-v_1}{\dfrac{t_2+t_1}{2}}

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