An athlete swims the length of 50m pool in 20sec, and
takes the return to the trip in 22 sec.
find the average velocity and speed .a) in the first half of swim, b) in the second half of swim ,c) in the total trip. pls me.

Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33

Ineed the answers for these promblems i have

In what direction does an applied force move an object