5. If you walk 70 meters north in 5 minutes and 20 meters south in 15 seconds. What was the average speed and velocity

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

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?