Physics GAT1

?
  • Created by: Gorb
  • Created on: 31-10-21 21:54
What is the formulae for speed?
Speed (m/s) = distance (m) / time (s)
1 of 38
What is the formulae for average speed?
Total distance (m) /Total time (s)
2 of 38
What is distance and does it involve direction?
Distance is how far an object moves. It doesn't involve direction.
3 of 38
What quantity is speed?
Scalar quantity
4 of 38
Is velocity scalar or vector?
Vector
5 of 38
What do distance/time graphs do?
They calculate the speed of an object from the gradient (curve) of the graph
6 of 38
What is velocity?
Speed in a direction.
7 of 38
Is displacement vector or scalar?
Vector
8 of 38
What is displacement?
The distance and direction of an object.
9 of 38
Eg. what does motion in a circle represent? (speed, velocity)
Constant speed but changing velocity.
10 of 38
What does a velocity/time graph show?
The acceleration.
11 of 38
What is terminal velocity?
A constant speed and direction.
12 of 38
What does a =
acceleration (m/s^2) = change in (or a triangle) velocity (m/s)/time (s)
13 of 38
What does a negative slope in a graph mean?
deceleration
14 of 38
Calculate the acceleration.
Velocity = 10m/s^2
Time = 2s
a = change in velocity/time
10/2 = 5
15 of 38
What are contact and non contact forces?
Contact forces = physically touching
Non contact forces = physically separated
16 of 38
Are forces vectors or scalars
All forces are vectors
17 of 38
What is newton's first law of motion?
Newton's first law is : if an object is not moving or at a constant speed, it will remain that way unless acted upon by another force.
18 of 38
What does it mean is Resultant Force = 0
Forces are balanced and the object will continue to rest or move in a constant speed.
19 of 38
Name 5 forces
Frictional forces, tension forces, gravitational force, magnetic force, spring force, air resistant force
20 of 38
What does Inertia mean
An object is still, or moving at a constant speed
21 of 38
What is newtons second law?
F=ma
22 of 38
What is mass measured in?
Kg
23 of 38
What is it called when an object is moving at a constant speed or still?
Inertia
24 of 38
What does weight =
Weight (N) = mass (Kg) x gravitational field strength (N/kg)
25 of 38
What does weight depend on (other forces)
Gravitational field strength and the point at which the object is.
26 of 38
When two objects react are the resultant forces equal or different (not non elastic)
Equal
27 of 38
What is newtons third law
whenever two objects interact, they exert equal and opposite forces on each other
28 of 38
What are the forces exerted on a parachutist
gravity and drag
29 of 38
What are the forces exerted on a ball in liquid
Weight, buoyancy and drag
30 of 38
Resultant F =
Resultant F (N) = m (Kg) a (m/s^2)
31 of 38
What force increases with speed when an object falls through the atmosphere?
Air Resistance
32 of 38
Air Resistance increases until...
It is equal to the weight of the object
33 of 38
When air resistance is equal to the weight to the object ________ is reached and ________
1. Terminal velocity
2. acceleration is 0
34 of 38
In a vacuum a feather has an acceleration of __
and a hammer an acceleration of __
'g' (gravity)
35 of 38
In a vacuum all bodies accelerate ...
at the same rate
36 of 38
Will an object in a liquid INNITIALY accelerate?
Due to?
yes
due to gravity
37 of 38
Eventually the resultant force will be
0 as it reaches the terminal velocity
38 of 38

Other cards in this set

Card 2

Front

What is the formulae for average speed?

Back

Total distance (m) /Total time (s)

Card 3

Front

What is distance and does it involve direction?

Back

Preview of the front of card 3

Card 4

Front

What quantity is speed?

Back

Preview of the front of card 4

Card 5

Front

Is velocity scalar or vector?

Back

Preview of the front of card 5
View more cards

Comments

Gorb

Report

I am Gorb
~Gorb

Similar Physics resources:

See all Physics resources »See all Fourth Form GAT1 Revision List resources »