Electron is accelerated through 2.40 3 103 v from rest and then enters a uniform 1.70-t magnetic field. what are (a) the maximum and (b) the minimum val-ues of the magnetic force this particle experiences? 8.a proton moves with a velocity of vs5

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?