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secondary 3 | E Maths
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Its physics
Horizontal line for 0.5s starting from 10 m/s2. Then the deceleration line (down sloping) until speed is 0 m/s. Final time should be 2.5s. For part b, find total area under graph.
Actually this is e maths. You should see this in sec 3 e maths.
v = u + at
where
v = 0 m/s
u = 10 m/s
a = -5.0 m/s²
t = t₂ - 0.5
0 = 10 + (-5)(t₂ - 0.5 )
t₂ - 0.5 = 2
t₂ = 2.5 s
(b)
distance travelled
= ½ x 10 x (0.5 + 2.5)
= 15 m
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