You are Here: Home >< GCSEs

# gcse physics resultant force question help!! Watch

Announcements
1. ...
2. if you draw a boat with a line going straight up the page 5cm long to represent the engine thrust, a line 2cm long from the arrow head of the first arrow but this time directly right across the page. drawing a line from the base of the first arrow to the point of the last ( the one going right) will be the resultant. measuring this will give you its magnitude. measuring the angle will give you the the direction in "degrees from the vertical". honestly i'd watch someone do " vector resolution with to scale drawing" as seeing it written might not make a lot of sense. the acceleration is Force over mass so Resultant/ 1000.

You can also do the question with contrived mathematics.
The resultant velocity can be found with pythagoras. R^2 = 50^2 + 20^2 so R = squrt(2900) ==53.85N
The angle can be found using arctan(20/50) == 21.8 degrees from the vertical to the right.
if F=MA the F/M=A so 53.85/1000 = 0.05385 ms^-2 is the acceleration
arctan is just the proper way to write tan^-1

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: October 1, 2016
Today on TSR

### Oxbridge

Even more elitist than everyone thought?

### Physically ill after being cheated on

Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• Poll
Useful resources

## Study tools

### Essay expert

Learn to write like a pro with our ultimate essay guide.

See where you can apply with our uni match tool

### Make study resources

Create all the resources you need to get the grades.

### Create your own Study Plan

Organise all your homework and exams so you never miss another deadline.

### Resources by subject

From flashcards to mind maps; there's everything you need for all of your GCSE subjects.

### Find past papers

100s of GCSE past papers for all your subjects at your fingertips.

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• 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.