Question

A book is moving with in a negative direction with an initial speed of 5m/s as it passes a table. It accelerates at -3m/s2 until it hits the ground 5m below the table. What is the velocity of the book at the end of those 5m?

Answer 1

Step-by-step explanation:

Speed = 5m/s

Acceleration = -3m/s²

height = 5m

velocity= ?

v²=u²+2as

= 5² + 2(-3×5)

= 25+ (-30)

= -5

the velocity of the book is now -5m/s