A particle is moving in a straight line according to the position function s(1) = r - 612 +9t +5, 120, where s is measured in metres and t in se onds. a) Find the average acceleration in the first 3 seconds. b) The particle changes direction twice. When does that happen? c) How far away, from the starting point, is the particle at t= 3?

A particle is moving in a straight line according to the position function s(1) = r - 612 +9t +5, 120, where s is measured in metres and t in se onds. a) Find the average acceleration in the first 3 seconds. b) The particle changes direction twice. When does that happen? c) How far away, from the starting point, is the particle at t= 3?

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Description: A particle is moving in a straight line according to the position functions(1) = 1 - 612 +9t +5, 120, where s is measured in metres and t in se ɔnds.a) Find the average acceleration in the first 3 seconds.b) The particle changes direction twice. Whe

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A particle is moving in a straight line according to the position function
s(1) = 1 - 612 +9t +5, 120, where s is measured in metres and t in se ɔnds.
a) Find the average acceleration in the first 3 seconds.
b) The particle changes direction twice. When does that happen?
c) How far away, from the starting point, is the particle at 1 = 3?
d) The particle brakes once. When does that happen? :
e) Find the total distance travelled before braking occurs. (*

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