# Physics

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#1
I'm struggling a bit with this question, it seems quite simple but I can't seem to get the right answer.. pls help:
A car accelerates from rest at a rate of 3.5 metres per second squared for 6 seconds; it then travels at a constant speed for a further 8 seconds. Calculate the distance that the car has travelled in this time.
0
1 year ago
#2
Draw a acceleration distance graph and work out area under it
Last edited by Kkapoor155; 1 year ago
1
#3
(Original post by Kkapoor155)
Draw a acceleration distance graph and work out area under it
I've tried but according to the answer book the distance is 231m and I don't get that answer using the graph
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1 year ago
#4
(Original post by RIP_Katie_2018)
I'm struggling a bit with this question, it seems quite simple but I can't seem to get the right answer.. pls help:
A car accelerates from rest at a rate of 3.5 metres per second squared for 6 seconds; it then travels at a constant speed for a further 8 seconds. Calculate the distance that the car has travelled in this time.
Okay so I take it you've done the equations of linear motion as this is in the A Level section, so a=3.5 ms^-2

For the first 6 seconds the distance is given by
S=(at^2)/2

Then for the final 8 seconds the distance is given by
S=ut. T=8 in this

Where u=at t=6 in this

Then sum the distances and hey Presto
Last edited by M4cc4n4; 1 year ago
2
#5
(Original post by M4cc4n4)
Okay so I take it you've done the equations of linear motion as this is in the A Level section, so a=3.5 ms^-2

For the first 6 seconds the distance is given by
S=(at^2)/2

Then for the final 8 seconds the distance is given by
S=ut. T=8 in this

Where u=at t=6 in this

Then sum the distances and hey Presto
I got it! Thank you so much )
0
1 year ago
#6
(Original post by RIP_Katie_2018)
I got it! Thank you so much )
Are you in As-Level ? I need help
0
1 year ago
#7
(Original post by Daniyal Shah)
Are you in As-Level ? I need help
What do you need help with?
0
1 year ago
#8
(Original post by M4cc4n4)
Okay so I take it you've done the equations of linear motion as this is in the A Level section, so a=3.5 ms^-2

For the first 6 seconds the distance is given by
S=(at^2)/2

Then for the final 8 seconds the distance is given by
S=ut. T=8 in this

Where u=at t=6 in this

Then sum the distances and hey Presto
Well done! you are new here, aren't you? have never faced you in a science forum so far.
0
1 year ago
#9
(Original post by Kallisto)
Well done! you are new here, aren't you? have never faced you in a science forum so far.
Not really, I mostly stick to the maths and sometimes physics forums, but have been trying to help more in the physics one recently
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1 year ago
#10
(Original post by M4cc4n4)
What do you need help with?
Can send me Kinematics Notes
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1 year ago
#11
(Original post by Daniyal Shah)
Can send me Kinematics Notes
I already have my notes away sorry!
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