Maths Vectors Question A Level
Hi, I am REALLY struggling on this question and dont know where to even begin, any help would be great!
The horizontal unit vectors i and j are in the directions east and north respectively.
A model ship of mass 2kg is moving so that its acceleration vector ams^-2 at time t seconds is given by
a=3(2t-5)i+4j. When t=T, the magnitude of the horizontal force acting on the ship is 10N.
Find the possible values of T.
Ive been told to use pythagorus to find the magnitude of the corresponding force and equate to 10 and solve for T. But unfortunately I do not know what that means so if someone could explain in simpler terms it would be much appreciated!!!! <3
The horizontal unit vectors i and j are in the directions east and north respectively.
A model ship of mass 2kg is moving so that its acceleration vector ams^-2 at time t seconds is given by
a=3(2t-5)i+4j. When t=T, the magnitude of the horizontal force acting on the ship is 10N.
Find the possible values of T.
Ive been told to use pythagorus to find the magnitude of the corresponding force and equate to 10 and solve for T. But unfortunately I do not know what that means so if someone could explain in simpler terms it would be much appreciated!!!! <3
Original post by hayley26
Hi, I am REALLY struggling on this question and dont know where to even begin, any help would be great!
The horizontal unit vectors i and j are in the directions east and north respectively.
A model ship of mass 2kg is moving so that its acceleration vector ams^-2 at time t seconds is given by
a=3(2t-5)i+4j. When t=T, the magnitude of the horizontal force acting on the ship is 10N.
Find the possible values of T.
Ive been told to use pythagorus to find the magnitude of the corresponding force and equate to 10 and solve for T. But unfortunately I do not know what that means so if someone could explain in simpler terms it would be much appreciated!!!! <3
The horizontal unit vectors i and j are in the directions east and north respectively.
A model ship of mass 2kg is moving so that its acceleration vector ams^-2 at time t seconds is given by
a=3(2t-5)i+4j. When t=T, the magnitude of the horizontal force acting on the ship is 10N.
Find the possible values of T.
Ive been told to use pythagorus to find the magnitude of the corresponding force and equate to 10 and solve for T. But unfortunately I do not know what that means so if someone could explain in simpler terms it would be much appreciated!!!! <3
Force = mass x acceleration. If you have the magnitude of the force you can find the magnitude of acceleration. How do you get the magnitude of a vector when you know its i- and j- compnents?
Original post by hayley26
using pythagorus - but when finding magnitude e.g. (sqr root) (6t-15)^2 + 4^2 , do i ignore the t ?
The problem is to solve for the time when the acceleration corresponds to a force of 10N.
How are force and acceleration related? Then solve for t.
Note, your pythagorean triples could give you a short cut way to the answer(s), but setting up the problem as a quadratic in t is the usual method.
(edited 2 years ago)
Quick Reply
Related discussions
- Tips for Further Maths AS
- help with resultant vertical velocity question please
- Maths A-Level Vectors
- Maths gcse to a level
- A*A* in maths + further maths A level - ask me anything
- a level maths content
- Further maths help
- Maths help - Vectors
- AS-level Edexcel Pure Paper 2023, 18th May
- Hardest part of A level maths
- Vectors - Orthogonal
- A level maths mechanics question
- maths mechanics
- vectors question a level maths
- A Level Maths Question (1)
- maths a level
- Which areas of further maths are most relevant for computer science?
- OCR GCSE Maths Paper 2 (Higher) - Non Calc 7th June 2023
- Maths A-Level Edexcel
- Edexcel AS further maths - Core Pure 1 (15th May 2023)
Latest
Trending
Last reply 2 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 2 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
