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secondary 3 | E Maths
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Tarah toh
Tarah Toh

secondary 3 chevron_right E Maths chevron_right Singapore

Its physics but please still help

Date Posted: 5 years ago
Views: 529
snell
Snell
5 years ago
(a) Net force = 0 N
bcos constant speed

(b) Frictional force = 30 N

(c)(i) Net force = 35 - 30 = 5 N

F = ma
5 = 6 x a
a = 0.833 m/s²

(c)(ii)
v = u + at
= 15 + (5/6) x 3
= 17.5 m/s

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
The most important key point to note is that constant speed always means no resultant force.