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1. A car moves with constant acceleration along a straight horizontal road, The car pases the point A with a spped of 5m/s and 4 seconds later it passes point B where AB = 50 metres.

a). Find the acceleration of the car

b). When the car passes the point C, it has a speed of 30m/s
Find the distance AC
2. (Original post by AlfinKJ)
A car moves with constant acceleration along a straight horizontal road, The car pases the point A with a spped of 5m/s and 4 seconds later it passes point B where AB = 50 metres.

a). Find the acceleration of the car

b). When the car passes the point C, it has a speed of 30m/s
Find the distance AC
What have you got so far?
3. u = 5
s = 50
t = 4

a) s= ut + 1/2at^2
50 = 20 + 8a
8a = 30
a = 30/8 ms^-2

u = 5
a = 30/8
v = 30

b) v^2 = u^2 +2as
900 = 25 + 30s/4
875 = 30s/4
(4*875)/30 = s

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Updated: November 1, 2015
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