Acart of mass 250 g is place on a frictionless horizontal air track. a spring having a spring constant of 9.5 n/m is attached between the cart and the left end o f the track. if the cart is displaced 4.5 cm from its equilibrium position, find: a) the period at which it oscillates.[1.0 s] b) its maximum speed.[0.28 m/s] c) its speed when it is located 2.0 cm from its equilibrium position.[0.25 m/s]