- #1
pamelajanas
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Homework Statement
An object starts at rest and accelerates at 2.5 m/s^2 for 12 seconds. It then moves at a constant velocity for 5.0 seconds and then slows down uniformly at 1.5 m/s^2 until it stops. Calculate:
a) the constant velocity
b) the time taken for deceleration
c) the total displacement
Homework Equations
"possibly"
a=v/t or any of the five equations for uniform acceleration
The Attempt at a Solution
I know how to do part c) but i need the first two answers which I'm not sure how to use.
For a) i don't know which method to use: a=v/t or some kinematic equation, or which acceleration to use or which time (the 12 seconds while its accelerating, or the 5 seconds for constant velocity.
For b) i don't know how to do either because it i based on part a)