A 72-kg skydiver is falling from a high altitude. At an instant during the fall, the skydiver encounters an air resistance force of 540 Newtons. Determine the acceleration (in m/s2) of the skydiver at this instant. (Hint: you should find the weight of the skydiver first, and then calculate the net force and acceleration)

What is the mass of the same rock on the earth

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles

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.)