Question

Suppose a book is dropped from a height of 1.0 m. What is the velocity of the book just before it hits the ground?

A. 19.6 m/s
B. 19.6 mph
C. 4.4 m/s
D. 4.4 mph

Answer 1

C. 4.4 m/s

Explanation:

we are expected to solve for the final velocity

using

V^2=U^2+2as we have

s=1m

U=0m/s

a=9.81m/s^2

substituting we have

V^2=U^2+2as

V^2=0+2*9.81*1

V^2=19.62

squaring both sides we have

V=√19.62

V=4.4m/s