# Homework Help: Velocity vs displcement graph

1. Jun 21, 2013

### hav0c

1. The problem statement, all variables and given/known data
The graph is as folllows-(SEE ATTACHMENT)
Q.draw acceleration vs disp. graph.

2. Relevant equations
Basic equations of motion, basic calculus

3. The attempt at a solution
I have tried to write a linear equation in v and s and then differentiating it w.r.t. to time. but im not sure if this is the correct way to do it. It gives me a positive slope and -ve y intercept.
Also if there is/are any other ways please do tell

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2. Jun 21, 2013

### darkxponent

first write the v-s equation, but do not diffrentiate it with time(as it would add one more variable which is not needed)

Hint: What is the relation between v,a and s?

3. Jun 21, 2013

### hav0c

i have solved the question.
1 doubt though which extra variable is generated? on differentiation
v becomes a
s becomes v
constant is eliminated

4. Jun 21, 2013

### darkxponent

I thought 't" would create some some problems but thanks it is eliminated. You can also do it using the relation a = v*dv/ds. This was what i was refering to!