An athlete runs along a straight track and chooses the forward direction as positive

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

An athlete runs along a straight track and chooses the forward direction as positive. His initial velocity is

+8\,\text{m/s}

. He experiences a uniform acceleration of

-1.5\,\text{m/s}^2

for

4\,\text{s}

. Calculate his final velocity.