Question

1. A ball is thrown vertically upwards from the ground. The distance s in t seconds is given by s = 4(t)^2 + t -3. After how many seconds does the ball come to rest?
A. 2
B. 1
C. 3/4
D. 4/3

Answer 1

3/4 is your answer. ........

Answer 2

4t²+t-3=0
4t²+4t-3t-3=0
4t(t+1)-3(t+1)=0
t= -1is not possible
Hence t=4/3