[نينوووو]

السلام عليكم الرجاء مساعدتي في حل الأسئله هذي ضروري جدا جدا

The displacement of a particle at t=0.250 s is given by
the expression x=(4.00m) cos (3.00 πt +π)where x
is in meters and t is in seconds. Determine (a) the frequency
and period of the motion, (b) the amplitude of
the motion, (c) the phase constant, and (d) the displacement
of the particle at t=0.250 s.


A 1.00-kg mass is attached to a horizontal spring. The
spring is initially stretched by 0.100 m, and the mass is
released from rest there. It proceeds to move without
friction. After 0.500 s, the speed of the mass is zero.
What is the maximum speed of the mass?