Forces
* Required
Scalars and Vectors
Which of the following is a vector?
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1 point
Speed
Distance
Acceleration
Mass
Which of the following is a scalar?
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1 point
Displacement
Acceleration
Weight
Mass
Forces
A gravitational force is an example of...
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1 point
A contact force
A non- contact force
What is the correct equation needed to calculate weight?
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1 point
Weight = mass
Weight = mass + gravitational field strength
Weight = mass x gravitational field strength
Weight = mass / gravitational field strength
Weight = gravitational field strength
Calculate the mass of an object that has a weight of 300N and gravitational field strength of 10N/kg
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1 point
3kg
30kg
300kg
3000kg
Calculate the resultant force acting on a skydiver that has a weight of 700N and air resistance of 300N.
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1 point
300N
400N
700N
1000N
Which equation shows the relationship between force, spring constant and extension of an elastic object, such as a spring.
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1 point
Force = spring constant x extension
Force = spring constant - extension
Force = spring constant + extension
Force = spring constant - extension
If the mass hanging on a spring is doubled from 0.5 kg to 1kg, what will happen to the extension of the spring?
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1 point
It will half
It will stay the same
It will double
Which of the following is the correct equation for Newton's second law?
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1 point
Force = mass x acceleration
Force = weight x acceleration
Force = mass / acceleration
Force = weight / acceleration
Which of the following speeds is a typical running speed?
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1 point
0.5m/s
1.5m/s
3m/s
6m/s
Stopping distances
Drinking alcohol will affect a drivers braking distance
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1 point
True
False
If a car doubles its speed, its braking distance will...
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1 point
stay the same
be twice as long
will be three times longer
will be four times longer
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