I GIVE MEDALS.
You accidentally drop a book down a stairwell. Assuming no air resistance, how fast will the book be moving after 1.1 seconds?

A. 10.8 m/s
B. 4.9 m/s
C. 1.1 m/s
D. 9.8 m/s

Question

I GIVE MEDALS. 
You accidentally drop a book down a stairwell. Assuming no air resistance, how fast will the book be moving after 1.1 seconds?

 		A.	10.8 m/s
 		B.	4.9 m/s
 		C.	1.1 m/s
 		D.	9.8 m/s

anonymous · Answer

A 10.8m/s 
 Since the acceleration of the boook is g(9.8m/s^2), velocity as a function of time is given by
v=g*t
v=9.8*1.1
v=10.78--->10.8