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Physics help - distance and displacement

On Monday: I walk 20m east then 10m west.

On Tuesday: I walk 20m west then 10m east

what were the distance travelled & displacement on (a) Monday and (b) Tuesday?

My answers:

Monday - distance 30m, displacement 10m
Tuesday - distance 30m, displacement -10m

I'm not 100% sure so any help would be appreciated
Original post by KINGYusuf
On Monday: I walk 20m east then 10m west.

On Tuesday: I walk 20m west then 10m east

what were the distance travelled & displacement on (a) Monday and (b) Tuesday?

My answers:

Monday - distance 30m, displacement 10m
Tuesday - distance 30m, displacement -10m

I'm not 100% sure so any help would be appreciated


This looks right to me.


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(edited 7 years ago)
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KINGYusuf
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Original post by RossB1702
This sounds right to me.


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Thanks alot. I appreciate it. Do you think you can help me with 1 more Q?

(a) I got 1.75m/s
(b) I got 285.7s
(c) I got 257.1m

:smile:
(edited 7 years ago)
Fizix.png44.4KB
Original post by KINGYusuf
On Monday: I walk 20m east then 10m west.

On Tuesday: I walk 20m west then 10m east

what were the distance travelled & displacement on (a) Monday and (b) Tuesday?

My answers:

Monday - distance 30m, displacement 10m
Tuesday - distance 30m, displacement -10m

I'm not 100% sure so any help would be appreciated


Well displacement is supposed to have a direction as it is a vector quantity, so for Monday displacement is 10m due North of East and for Tuesday displacement is 10m due North of West hope it helped
Original post by KINGYusuf
Thanks alot. I appreciate it. Do you think you can help me with 1 more Q?

(a) I got 1.75m/s
(b) I got 285.7s
(c) I got 257.1m

:smile:


Part a you should draw a right angles triangle and solve for the resultant velocity using Pythagoras.

Part B is a simple t=d/v using the resultant velocity calculated in part a.

Part c it asks you to calculate the horizontal distance travelled down the bank and it already gives you the horizontal velocity as the current. So d=vt.

All 3 of your answers I think are correct. Truth be told I haven't done these type of examples in a couple years so was hesitant about c because it took me a while to figure out it was asking for the horizontal distance travelled by the boat.


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