A parachutist bails out and freely falls 56 m. Then the parachute opens, and thereafter she decelerates at 1.7 m/s2. She reaches the ground with a speed of 3.2 m/s.
(a) How long is the parachutist in the air?
(b) At what height does the fall begin?

Which feature of a heating curve indicates a change ofn state

Ametal ball with a mass of 0.028 kg is dropped from rest at a height of 1.0 meters above the ground. assuming the energy in the ball is conserved, how much kinetic energy will the ball have when it is 0.5 meters above the ground?

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?