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# Mechanics Help!! Watch

1. I found a question in an M1 gold paper. Its quesion 4(c) in Edexcel Gold 3.
2. Here
Attached Images
3. 13 Gold 3 - M1 Edexcel.pdf (163.1 KB, 79 views)
4. From your diagram of part 4(a), you should have obtained T=75 for 4(b)

4(c) at 990m the time is 60 seconds for the car.
the first part from u=0 to v=22 has an area of 330m. The remaining 660 m is covered in another 30 seconds (at v = 22) so in total the car is at t = 60s.
The motorcyclist starts 10 secs later so it takes him 50 seconds to arrive at point A
4(d) s = ut + 1/2 a t^2
990 = 1/2 a 50^2
a = 1980/2500 = 0.792 m s^-2

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Updated: June 3, 2016
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