Displacement time graph
For the fist 2s, the displacement time graph is not a stariaght line.
Since it's not a straight line, the object is accelerating and the velocity is not constant.
If we represent this in a velocity time graph for the first 2s, should we draw a straight line or a bit curved like the one in the displacement time graph?
I'm a bit perplexed about this.
This is what I did.
because
And in the ms it is a straight line.
(edited 2 years ago)
If the displacement curve is quadratic, the velocity is linear and the acceleration is constant. So the ms looks good.
The dispacement is ~quadratic on [0,2] amd [6,8], so the velocity is linear in each interval
The displacement is linear in [2,6], so the velocity is constant.
The dispacement is ~quadratic on [0,2] amd [6,8], so the velocity is linear in each interval
The displacement is linear in [2,6], so the velocity is constant.
(edited 2 years ago)
Original post by mqb2766
If the displacement curve is quadratic, the velocity is linear and the acceleration is constant. So the ms looks good.
The dispacement is ~quadratic on [0,2] amd [6,8], so the velocity is linear in each interval
The displacement is linear in [2,6], so the velocity is constant.
The dispacement is ~quadratic on [0,2] amd [6,8], so the velocity is linear in each interval
The displacement is linear in [2,6], so the velocity is constant.
thanks.
i didn't know about the quadratic part which is why i was bewildered.
Original post by Aleksander Krol
thanks.
i didn't know about the quadratic part which is why i was bewildered.
i didn't know about the quadratic part which is why i was bewildered.
Its just suvat (constant acceleration) so
s = ut + 0.5at^2
displacement is a quadratic function of time.
What you drew was ~ok, but its simpler to assume suvat-type behaviour unless its obviously not. Here the only difference was it appears to be piecewise suvat on 0-2, 2-6, 6-8. Also, note the similar displacement behaviour on 0-2 and 6-8. The velocity should have some similarity as well on those intervals.
(edited 2 years ago)
Quick Reply
Related discussions
- Help maths
- Help mechanics
- is this correct relationship between velcoty, acceleration and displacement?
- Kinematics help a level
- Physics question displacement
- Edexcel M1 ex2D Question 11b
- Help mechanicsss
- A level mechanics
- Need help with A Level Simple Harmonic Motion question
- Physics AS June 2021 Q3.3
- AQA AS Physics - June 2022 - Paper 2 Question 4.4 - struggling
- The Weighing Machine - Isaac physics
- Differentiation
- A-Level Using areas to find distances and displacements
- Can anyone help with this SUVAT A-level question?
- as level mechanics suvat
- Mechanics Question Help
- Physics question help please?
- AS Applied Unit 9 Kinematics 2 (variable acceleration)
- A level physics
Latest
Trending
Last reply 3 days ago
Did Cambridge maths students find maths and further maths a level very easy?Last reply 2 weeks ago
Edexcel A Level Mathematics Paper 2 unofficial mark scheme correct me if wrongMaths
71
Trending
Last reply 3 days ago
Did Cambridge maths students find maths and further maths a level very easy?Last reply 2 weeks ago
Edexcel A Level Mathematics Paper 2 unofficial mark scheme correct me if wrongMaths
71
