# Physics - Dynamics & Space

Mind Map by , created over 5 years ago

## National 5 and Higher Physics Mind Map on Physics - Dynamics & Space, created by sstead98 on 04/01/2014.

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 Created by sstead98 over 5 years ago
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Physics - Dynamics & Space
1 Vectors and Scalars
1.1 Scalars have magnitude only
1.1.1 Speed
1.1.2 Distance
1.1.3 Mass
1.1.4 Energy (kinetic too!!!)
1.2 Vectors have magnitude and direction
1.2.1 Velocity (v=s/t)
1.2.2 Displacement (s)
1.2.3 Acceleration (a=[v-u]/t)
1.2.4 Force (F=ma)
1.2.5 Weight (W=mg)
2 Instantaneous Speed
2.1 Measured over very short distances or time intervals
2.2 Light Gate Experiment
2.2.1 Instantaneous Speed = length of card / time light beam is broken
3 Average Speed
3.1 Measured over longer distances or time intevals
4 Newton's Laws of Motion
4.1 Newton's 1st Law of Motion
4.1.1 An object will remain at rest or at a constant speed in the same direction unless acted upon by an external unbalanced force
4.2 Newton's 2nd Law of Motion
4.2.1 Force = mass x acceleration
4.2.1.1 F=ma
4.3 Newton's 3rd Law of Motion
4.3.1 For every action there is an equal and opposite reaction
4.3.2 If A exerts a force on B, then B exerts an equal and opposite force on A.
5 Projectiles
5.1 Projectile motion is viewed as two separate motions
5.1.1 Horizontal
5.1.1.1 The projectile remains at a constant speed horizontally. Excluding air resistance, there are no forces acting upon the projectile.
5.1.2 Vertical
5.1.2.1 The projectile accelerates downwards at 9.8 m/s^2 due to weight (the force due to gravity)
5.2 The projectile follows a curved path because it is travelling at a constant speed horizontally, but accelerating vertically downwards at the same time.