A swimmer with a mass of 56 kg pushes horizontally against the pool wall toward the

east for 0.75 s with a constant force. Having started from rest, the swimmer glides to a

maximum speed of 75 cm/s. Neglecting friction, determine the magnitude of

(a) the (constant) acceleration [ans: 1.0 m/s2 [W]]

(b) the force exerted by the swimmer on the wall [ans: 56 N [E]]

(c) the force exerted by the wall on the swimmer [ans: 56 N [W]]

(d) the displacement of the swimmer from the wall after 1.50 s