A sound wave of frequency
1210 Hz has a wave speed of
343 m/s. What is the wavelength
of the wave?
(Unit = m)

If a spring has a k value of 100 newtons per meter and it is stretched 0.50 meters, what is the restoring force of the spring?

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)