2. A cart travels continuously around a circular track with a constant acceleration. The track has a length of 10km.
At a specific time, t = 0, its position is measured.
It takes half an hour for the cart to complete one full lap of the track.
It takes two hours (from time t = 0) for the cart to complete ten full laps of the track.
The following formula describes this situation
at2
s=uot+
2
where
s is the displacement, measured in km
• u, is the velocity of the cart when t = 0, measured in kmh-2
t is the time taken, measured in hours
a is the acceleration of the cart, measured in kmh-2
a) Use the information about the position of the cart after half an hour to
write a formula linking u, and a.
.
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E
01:57
17/05/2021