Formulas
Force diagrams
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Converting units
Double your Points
100
What is the formula to calculate Pressure?
Pressure = force / area
100
What is happening to this car?
It is accelerating forward.
100
What is the unit of Force?
Newtons (N)
100
How many km in 5400 meters?
5.4 km
100
How do you calculate the average speed of an object in a race using a distance and time graph?
Take the final distance divide it by the final time
200
If I had to calculate the Force of an object when falling, I would use what formula?
Force = mass x acceleration
200
What force makes a car slow down?
Friction force
200
What is the unit of speed used in Physics?
meters/seconds
200
How many seconds in 10 minutes?
600 s
200
What does a speed and time graph tell us about an object?
It shows the acceleration of the object.
300
If I was calculating the force an object with mass of 10 kg would have on the surface it hits, I would multiply mass by what number?
gravity = 10 meters per second squared
300
On a force diagram if the arrows the same size the net force is what?
The net force is 0
300
What number do I multiply 2 hours by to convert it to seconds?
3600
300
How many centimeters in 5.6 m?
560 cm
300
When the line is parallel to the x axis in a velocity and time graph what is the movement of the object?
The object is traveling at a constant speed in the same direction.
400
What formula would I use to calculate Force if I know the pressure and the area of an object?
Pressure x area = Force
400
For an object that is slowing down, which arrow is largest?
The friction force arrow.
400
Why do satellites continue to orbit the earth?
Because there are no forces such as friction or air resistance in space. And the earths gravitational force keeps them from flying off into space.
400
How many seconds in 3 hours?
10800 s
400
In a distance and time graph the gradient of the object is curved downward what is happening to the object?
The object is slowing down and returning to its original point.
500
What two formulas would be needed to solve this question; An object traveled 20 meters in 5 sec then its speed changed to 5 m/s in 2 sec what was the acceleration of the object?
Speed = distance / time
Acceleration = change in velocity / change in time
500
For a car that is travelling along the road at a constant speed what are the names of the forces that are equal to each other?
Thrust equal force to Friction
Weight / gravity is equal to upward/ Support force
500
Newton's 2nd law can be explained with what formula?
F = ma
500
How many zeros do I place behind 7 km if I am converting it to mm?
6 zeros
7,000,000 mm
500
How do I calculate the average speed of a named section of a graph?
Take the change in speed and divide by the change in time of that section of the graph.
rise over the run