The Student Room Group

Reply 1

a=?ms-2
u=0ms-1
v=100kmh-1=100000mh-1=1666.67ms-1
t=5.8s

a=(v-u)/t
=(1666.67-0)/5.8
=1666.67/5.8
=287.3568966
=287.36ms-2 (to 2dp)

Reply 2

I really dont know how you got that answer, why did u divide 100000 by 60?

Reply 3

Neo1
I really dont know how you got that answer, why did u divide 100000 by 60?

you shoudnt divide it by 60 but by (60*60) = 3600
this is because there are 3600 seconds in every hour :wink: