Unit 4 Revision

Mass is measured in

• Newtons (N)

• Litres (l)

• Kilograms (kg)

• Meters (m)

Which of the following is not an instrument used to measure mass?

• Force meter

• Analog scale

• Digital scale

Is the following statement true or false?

'Mass is not a constant value.'

• True

• False

Which of the following statements is incorrect?

• Weight is the measure of gravity acting on an object.

• The weight of an object is the same on Earth and on the Moon.

• Weight is measured in Newtons

• The Earth's gravitational pull is greater than that on the Moon.

Calculate the weight of a bag of coconuts which has a mass of 5.8kg.

• 508N

• .58N

• 58N

• 850N

What is the mass of an object with a weight of 608N

• 60.8kg

• 68kg

• 608g

• 60kg

Is the following statement true or false?

In outer space, an object has a mass but does not have a weight.

• True

• False

What is a force?

• A push

• A pull

• Both of the above

What kind of a force is used by a magnet when it is brought near a nail?

• A pushing force.

• A pulling force.

When two forces acting in opposite directions on an object are equal, the object _____________.

• does not move.

• moves in one direction.

• changes shape.