Revition

Question 1

balanced forces

Answer 1

A resultant force is a the force that is produced in a certain ‘direction’ due to a ‘combination’ of force.

If the resultant force is zero the object will remain ‘stationery’

If the resultant force is not zero the object will ‘accelerate’ in the direction of the resultant force

Question 2

centre of mass

Answer 2

The centre of mass of an object, is that point at which its mass may be thought to be concentrated. Sometimes the centre of mass will not always be in the centre. A car for example, you’d think it’ll be the centre, but its not, you must think where the car is heaviest and think where the centre of mass will be located.

Question 3

speed = distance/time

Answer 3

To measure speed we need to know the distance the object has travelled and the time it takes to travel that distance. We must know where the object is moving or not and how long it has gone.
(Divide the speed and time to get your answer, also don’t forget the m/s at the end).

Question 4

acceleration = change in speed/time

Answer 4

You must calculate in what rate the object is moving at and how long its been going.
(Divide the speed and tome to get your answer, put m/s at the end of your answer).

ACC- Meters per second squared

Question 5

distance-time graphs

Answer 5

A method of describing the motion of an object, how far the object goes and how long the objects has went.