If a ball is thrown straight up into the air with an initial velocity of 55 ft/s, its height in feet after t second is given by y = 55t - 16t2. Find the average velocity (include units, help (units)) for the time period begining when t = 2 seconds
and lasting
(i) 0.5 seconds
Average velocity:
(ii) 0.1 seconds
Average velocity:
-(iii) 0.01 seconds
Average velocity
Finally based on the above results, guess what the instantaneous velocity of the ball is when t = 2.
Average velocity:

Arectangle with an area of 47 m² is dilated by a factor of 7. what is the area of the dilated rectangle? enter your answer in the box. do not leave your answer as a fraction.

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.

If you could answer these your a life saver