Pitanje 21
21.
1. Define "light year“.
2. Define "mass“.
3. State the units for speed.
4. What is the dependent variable?
5. Calculate the speed of a car travelling 100 metres in 10 seconds.
6. Name four things that could happen when the forces on an object are unbalanced.
What do line graphs show us?
What does a straight line on a distance-time graph show?
What does a curved line on a distance-time graph show?
What does a horizontal line on a distance-time graph show?
When is velocity constant on a velocity time graph
Describe the shape of the line when the object is accelerating
Describe the shape of the line when the object is decelerating
What do line graphs show us?
What does a straight line on a distance-time graph show?
What does a curved line on a distance-time graph show?
What does a horizontal line on a distance-time graph show?
When is velocity constant on a velocity time graph
Describe the shape of the line when the object is accelerating
Describe the shape of the line when the object is decelerating
Describe what is happening at the different parts of this journey.
Blue line is showing a ______ speed.
Orange line is showing a ________ ________ speed
Red line means the car was _______ for ____ s
Green line shows the car travelling at a _______ speed again.
I do - Calculate the speed the car is travelling in the first 20 seconds
You do - Calculate the speed the car is travelling in the orange lines
You do - Calculate the speed the car is travelling in the red lines
You do - Calculate the speed the car is travelling in the green lines
What is happening between the points?
