#can someone help me witht his question i dont get it

69 messages · Page 1 of 1 (latest)

valid forge
deft jewelBOT
weak arch
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Are you familiar with how to calculate the slope of a straight line?

valid forge
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nvm i got it

valid forge
weak arch
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have you made any progress yourself so far?

valid forge
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yea

weak arch
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so what have you determined so far?

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so that i can help you properly

valid forge
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wait so the ball is going downhill so

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is it b?

weak arch
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yeah

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lol

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positive velocity would be acting up the hill

valid forge
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lol im overthinking 😭

weak arch
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so negative velocity acts down the hill

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in C and D velocity is constant, so there's no acceleration

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in A the velocity is increasing (positive velocity = up the hill)

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therefore B must be the answer

valid forge
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so for this

image.png
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is it c

weak arch
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You tell me

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Can you explain your reasoning?

valid forge
weak arch
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it travels down a highway with velocity 100km/h [West]

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And what does positive velocity indicate, according to the question?

valid forge
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east?

weak arch
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Yup

valid forge
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oh

weak arch
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So by choosing C, you're saying it has a velocity of 100km/h east

valid forge
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nvm so its d

weak arch
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correct!

valid forge
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yay

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ok last question

image.png
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im not sure where to start

weak arch
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start with (i)

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during the 4-5 second period, how would you describe the ball's movement?

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and if you look at your options

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for part (i) you only have stationary or uniform

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which do you think it is and why?

valid forge
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doe sstationary mean still

weak arch
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yes

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stationary means not moving

valid forge
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ok so stationary

weak arch
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perfect

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so now we know it's either a or b

valid forge
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ok

weak arch
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can you figure out the rest by yourself now?

valid forge
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i think so

weak arch
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give it a go, and if you get stuck or are unsure, you can double check here 😎

valid forge
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what does neither and the forward mean-

weak arch
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look in the question

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"with the ball moving in ii direction"

valid forge
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so forward

weak arch
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is the ball moving in "the forward" direction?

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between seconds 4 and 5?

valid forge
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yea

weak arch
valid forge
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oh wait

weak arch
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even if you were unsure, you could look at part iii and make sure that's also correct

valid forge
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so neither

weak arch
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correct

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and just to be sure

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does part iii check out for the option you were going to choose?

valid forge
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yes

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zero

weak arch
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cool

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then you're done

valid forge
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yayy thanks