An object starts falling falling from rest. It travels 2.78 m in 0.75s i) find the velocity of the object

ii) Find the average velocity of the object

iii) Why is the final velocity higher than the average velocity?

Show all steps so I can follow please and understand how you go to the answer.

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

Could someone me find the answer to this problem.

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.