Answers

2015-01-23T16:32:19+08:00

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
d = v_{i}t + \frac{1}{2}at^{2}

where :
d-distance
vi-initial velocity
t-time
a-acceleration

d=110m
vi=0 since it is stated it started from rest
t=5.21s

110 = 0*5.21 + \frac{1}{2}a(5.21)^{2} \\ 110 = 0 + \frac{1}{2}a(5.21)^{2} \\ 110 =\frac{1}{2}a(5.21)^{2} \\ 2*110 = a(5.21)^{2} \\ 220 = 27.1441a \\ \frac{220}{27.1441} = \frac{27.1441a}{27.1441} \\ 8.10 \frac{m}{s^{2}} = a


0