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Stuck on a maths mechanics question.

Could someone help me with question 17 I have links to pictures below, also let me know if I have drawn the velocity time graph correctly.

https://cdn.discordapp.com/attachments/287271798779936768/423930325656272897/image.jpg

https://cdn.discordapp.com/attachments/287271798779936768/423930327820533771/image.jpg

Thank you
Original post by Vertanto
Could someone help me with question 17 I have links to pictures below, also let me know if I have drawn the velocity time graph correctly.

https://cdn.discordapp.com/attachments/287271798779936768/423930325656272897/image.jpg

https://cdn.discordapp.com/attachments/287271798779936768/423930327820533771/image.jpg

Thank you


The second slope has gradient −x-x since it's decelerating. Other than that it's fine.

For part (b) you just put the info you know together, so what's the area under the graph in terms of T and x? Make that equal to 6000 and rearrange.
Reply 2
Avatar for Notnek
Notnek
21
Original post by Vertanto
Could someone help me with question 17 I have links to pictures below, also let me know if I have drawn the velocity time graph correctly.

https://cdn.discordapp.com/attachments/287271798779936768/423930325656272897/image.jpg

https://cdn.discordapp.com/attachments/287271798779936768/423930327820533771/image.jpg

Thank you

So for b) you first need to use the gradients to find the times in the two regions either side of the T. Then use the fact that the total time is 300. Post your working if you get stuck.
Reply 3
Avatar for Vertanto
Vertanto
OP
7
Original post by Notnek
So for b) you first need to use the gradients to find the times in the two regions either side of the T. Then use the fact that the total time is 300. Post your working if you get stuck.


Yes! I got it now, thank you.

proof: https://cdn.discordapp.com/attachments/287271798779936768/423937087096619008/image.jpg

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