A student performing an experiment about the melting point of an object. After 5 trials he found the melting point to be 192 oC, 206 oC, 197 oC, 199 oC, and 202 oC. The accepted melting value temperature is 200 oC. Calculate the percent error.

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?