Ablock of mass 20 kg on a horizontal surface where uk= 0.4is pushed against an initially relaxed spring that has a force constant k = 100 n/m, compressing it 1.50 meters. it is then released, what is the maximum velocity of the mass?

A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s