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# Kinematics question watch

1. A particle travels in a straight line with uniform acceleration, passing through 3 points; A, B and C in that order at times t=0, t=2 and t=5 respectively. If BC=30m and the speed of the particle when at B is 7ms-1, find the acceleration of the particle and its speed when at A

2. Use SUVAT equations.
3. (Original post by Carokelly123)
A particle travels in a straight line with uniform acceleration, passing through 3 points; A, B and C in that order at times t=0, t=2 and t=5 respectively. If BC=30m and the speed of the particle when at B is 7ms-1, find the acceleration of the particle and its speed when at A

Form simultaneous equations for and using the two conditions you've been given. Hint:
Spoiler:
Show
at B and at C.
4. (Original post by joostan)
Form simultaneous equations for and using the two conditions you've been given. Hint:
Spoiler:
Show
at B and at C.
I still can't get it 😕
5. (Original post by Carokelly123)
I still can't get it 😕
Can you show us your work?
6. (Original post by Carokelly123)
I still can't get it 😕
Well, the first is reasonably simple, a standard use of - I'll leave you to do that.
The second, however, is a little more complicated - you need to consider for some convenient .
Bigger hint:
Spoiler:
Show
What if , where the subscript means the time at that point?

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