Motion Flashcards
What are Scalars and Vectors?
2 marks
The physical quantities (of motion) measured by a scientist.
What is the main difference between a Scalar and a Vector?
3 marks
The direction of movement shows the difference between a Scolar and Vector quantity - the difference between the speed of an object and it’s velocity.
What are the types of motion (2 main categories)?
2 marks
Scalars and Vectors
Define Motion
(3 marks)
Motion is the movement of an object or the change in position compared to a place/object that is not moving.
What is the place or object that is not moving, in the study of motion?
(1 mark)
The place or object that is not moving, in the study of motion is called the frame of reference.
What is a physical quantity?
1 mark
Something that can be measured.
What are Scalar Quantities made up of (what do they have)?
2 marks
Size (or magnitude)
What do Vector Quantities have?
2 marks
Size and direction
What is not important in ‘speed’ (a scalar quantity)?
1 mark
Direction
What is important in ‘velocity’ (a Vector Quantity)?
1 mark
Direction
Give examples of Scalar Quantities used in Physics.
5 marks
- Mass
- Distance
- Speed
- Rate of change of speed
- Time
Give examples of Vector Quantities used in Physics.
5 marks
- Displacement
- Velocity
- Acceleration
- Force
- Weight
What is Speed?
5 marks
- Measure of how fast something is travelling.
- It is the distance travelled in 1 second (or in 1 hour)
- It’s measured in m/s or km/h (or mph in UK cars)
Speed =
2 marks
Distance Travelled / Time Taken
Can be calculated using the DST triangle
3 marks
Distance, Speed, Time
How to use the DST triangle
1 mark
Cover the letter you want to find to get the Formula.
D =
2 marks
S x T
S =
2 marks
D / T
T
2 marks
D / S
Distance =
2 marks
Speed x Time
Speed =
2 marks
Distance x Time
Time =
2 marks
Distance / Speed
S x T =
1 mark
D
D / T =
1 mark
S