Question

V*2 = u*2+ 2as

y = 35.2 correct to 1 decimal place
a = 9.8 correct to 1 decimal place
s = 60.35 correct to 2 decimal places
Work out the upper bound for u.
Give your answer to 3 significant figures.

Answer 1

212m/s

Explanation:

change of subject formula v²=u²+2as

step 1: u²=√v/2as

=v/as

using the figures to adentify the letters

v=35.2

a=9.8

s=60.35

35.2/9.8x60.35

=2124.32

in three (3)significant figures

212 unit m/s