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# physics help

The speed of the cyclist and trailer increased uniformly from 0 m/s to 2.4 m/s.
The cyclist travelled 0.018 km while accelerating.
Calculate the initial acceleration of the cyclist

I really can't do this plz help
Original post by iris kh
The speed of the cyclist and trailer increased uniformly from 0 m/s to 2.4 m/s.
The cyclist travelled 0.018 km while accelerating.
Calculate the initial acceleration of the cyclist

I really can't do this plz help

What's the average speed?
looks like a suvat question, the velocity is increasing at a constant rate therefore the acceleration is constant. Make sure you turn the distance to metres
Original post by iris kh
The speed of the cyclist and trailer increased uniformly from 0 m/s to 2.4 m/s.
The cyclist travelled 0.018 km while accelerating.
Calculate the initial acceleration of the cyclist

I really can't do this plz help

You need to use suvat equations in order to do this

v^2 - u^2 = 2as and solve for a
(Final velocity)2 - (initial velocity)2 = 2 x acceleration x distance Rearrange distance into metres so 18 metres
2.4^2 - 0^2 = 2 x 18 x a
a = 2.4 x 2.4/ 36 = 0.16m/s^2
(edited 2 months ago)