Hey! Sign in to get help with your study questionsNew here? Join for free to post
 You are Here: Home >< Maths

# M1 Solomon K

Announcements Posted on
Would YOU be put off a uni with a high crime rate? First 50 to have their say get a £5 Amazon voucher! 27-10-2016
1. When the cyclist reaches the top of the hill, her speed is 3 m s-1. She subsequently acceleratesuniformly so that in the fifth second after she has reached the top of the hill, she travels 12 m.

(b) Find her speed at the end of the fifth second.

This is so badly worded i'm so confused. it says that IN the 5th second she travels 12m, doesnt this imply she is travelling at 12m/s???? but its asking me to find speed at the end of the 5th second????

im so confused someone help
2. (Original post by dnr_23)
This is so badly worded i'm so confused. it says that IN the 5th second she travels 12m, doesnt this imply she is travelling at 12m/s???? but its asking me to find speed at the end of the 5th second????

im so confused someone help
NO. It would be true if she was travelling at constant speed, but that's not the case here.

Wording of the question is fine, IMO.
3. i get you, it is badly worded. I had a similar problem in another solomon paper.
But just use u=3, t=5,s=12 and v=? and solve using suvat.
4. In the 5th second i.e.in the time between seconds 4 and 5, the distance travelled is 12m. Let a = acceleration, u = speed at the end of the 4th second.

So the distance travelled in the fifth second = 12 = u + 0.5at^2 = u + 0.5a

Knowing that the acceleration is constant, u = initial speed + at (where t=4) i.e. u = 3 + 4a

So, substitute this into the first equation to get 12 = (3 + 4a) + 0.5a = 3 + 4.5a so 4.5a = 9 and a = 2 m/s^2
5. thank u everyone!!

Write a reply…

Submit reply

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
that username has been taken, please choose another Forgotten your password?
2. this can't be left blank
this email is already registered. Forgotten your password?
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
your full birthday is required
1. Oops, you need to agree to our Ts&Cs to register
2. Slide to join now Processing…

Updated: June 7, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

### Halloween costume competition

Share your boo-tiful pics

Poll
Useful resources

## Make your revision easier

### Maths Forum posting guidelines

Not sure where to post? Read here first

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams

Can you help? Study help unanswered threads

## Groups associated with this forum:

View associated groups
Study resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.