A block of mass m = 2 kg is attached to a spring with spring constant k = 200
N/m, and is set to oscillate on a friction-less horizontal surface. At time t = 0 its
position is X0 = 0 and its velocity is v0 = +5 m/s. If the displacement is a cosine
function, X(t)=A cos(wt+p), then which answer is correct about the oscillation
amplitude A and the phase constant, p.:

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.