Forces

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Forces

Scalars and Vectors

Which of the following is a vector? *

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Speed

Distance

Acceleration

Mass

Which of the following is a scalar? *

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Displacement

Acceleration

Weight

Mass

Forces

A gravitational force is an example of... *

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A contact force

A non- contact force

What is the correct equation needed to calculate weight? *

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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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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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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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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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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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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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0.5m/s

1.5m/s

3m/s

6m/s

Stopping distances

Drinking alcohol will affect a drivers braking distance *

1 point

True

False

If a car doubles its speed, its braking distance will... *

1 point

stay the same

be twice as long

will be three times longer

will be four times longer

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