x Turn on thread page Beta
 You are Here: Home >< Physics

Motion - mcq watch

1. A drop slide in a fairground has a very steep initial slope which gradually curves into a more gentle slope. If a child drops down the slide,

what happens to his speed v and the magnitude of his acceleration a ?

Will both increase? If yes, I will then say my explanation.
2. (Original post by Daniel Atieh)
A drop slide in a fairground has a very steep initial slope which gradually curves into a more gentle slope. If a child drops down the slide,

what happens to his speed v and the magnitude of his acceleration a ?

Will both increase? If yes, I will then say my explanation.
No. One increases and the other gets less. (But see below)
Can you decide which?
(Are we to assume no friction? Is this the complete and original question? Was there a diagram? The child eventually comes to rest, we hope, so at some point his speed will start to decrease, and friction played an important part.)
3. (Original post by Stonebridge)
No. One increases and the other gets less. (But see below)
Can you decide which?
(Are we to assume no friction? Is this the complete and original question? Was there a diagram? The child eventually comes to rest, we hope, so at some point his speed will start to decrease, and friction played an important part.)
The velocity increases and the acceleration decreases right?

Yeah, this is the complete question. It's from the PAT papers. I guess we have to assume there is no friction though.
4. (Original post by Daniel Atieh)
The velocity increases and the acceleration decreases right?

Yeah, this is the complete question. It's from the PAT papers. I guess we have to assume there is no friction though.
The acceleration depends on how steep the slope is. If it's flat the acceleration is zero.
So acceleration gets less as the slope gets more gentle.
The velocity will increase so long as there is (positive) acceleration.
5. (Original post by Stonebridge)
The acceleration depends on how steep the slope is. If it's flat the acceleration is zero.
So acceleration gets less as the slope gets more gentle.
The velocity will increase so long as there is (positive) acceleration.
Thank you.

Damn, I even forgot simple mechanics :/

Turn on thread page Beta
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:
Updated: December 25, 2014
Today on TSR

Happy St Patrick's day!

How are you celebrating?

Stay at sixth form or go to college?

Discussions on TSR

• Latest
Poll
Discussions on TSR

• Latest

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