Graphs
On a distance Time Graph.
What is the x- axis?
Time
What is the formula to calculate speed?
Distance / Time
Can a notebook on your desk move if nothing pushes or pulls it?
No, a force is the only thing that can move things.
On a distance Time Graph.
What is the y- axis?
Distance
What is the formula to calculate average speed?
Total distance / Total time
What is Newton's first law?
Inertia, an object in motion stays in motion. Object at rest stays at rest.
On a distance time graph what does a flat line mean?
The object is not moving.
What is the speed of a ball that traveled 20 meters in 10 seconds?
20/10 = 2m/s
If I were to throw a baseball and a bowling ball with the same force, which would have a higher speed?
The baseball, because it's lighter.
On a distance time graph what does constant speed look like?
A straight line. (Diagonal up/down or even flat)
What is the average speed of a bike that traveled 20 miles in 1hr and then stopped to rest for 30 minutes and then went 10 miles in 30 minutes.
30miles/ 2hrs = 15mph
Give an example of a...
Balanced force
AND
Unbalanced force
1. Something not moving
2. Something moving
What does acceleration look like on a graph?
A curved line. (Goes slow to fast)
How would you measure the speed of a car racing?
First, measure the distance it travels.
Second, measure how much time it took to travel that distance.
What is the net force on a box being push to the
Right with 10N of force
AND being pushed to the left with 25N of force
15N to the left