4.1 Force, Mass And Weight Flashcards

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1
Q

What are the base units of mass

A

Kilograms, kg

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2
Q

Define mass

A

The amount of matter an object contains

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3
Q

Define weight and state its unit

A

The gravitational force acting on an object, newtons

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4
Q

State the equation for force

A

F = m x a

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5
Q

State the equation for weight

A

W = m x g

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6
Q

How do you determine the weight of an object

A

Using a newtonmeter calibrated to show the gravitational force acting on an object in newtons

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7
Q

Define 1 newton

A

The force required to accelerate a 1 kg object at 1 ms^-2

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8
Q

Define net/resultant force

A

The sum of all the forces acting on an object

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9
Q

Describe the motion of an object that has a net force of zero exerted on it

A

The acceleration is zero

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10
Q

Explain what is meant by resolving a force in its horizontal and vertical directions

A

Finding the horizontal and vertical components of the force

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11
Q

What is a normal contact force

A

The force exerted by a surface on an object WHICH ACTS perpendicularly to the surface

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