Forces Pre-test

A force is:

• A push or a pull

• Something that will always move an object

• Something that will always stop an object moving

• A metaphysical and ubiquitous power in the Star Wars fictional universe

A Perspex rod rubbed with a cloth will attract pieces of paper because:

• Protons have moved from the rod to the cloth

• The rod has an electrostatic charge

• The rod has warmed up

Which units are used to measure mass?

• Meters (m)

• Newtons (N)

• Kilograms (kg)

Which of the following is true about Gravity?

• It keeps the planets orbiting the Sun

• It pushes objects to the ground

• It is a contact force

Which units are used to measure weight?

• Meters (m)

• Kilograms (Kg)

• Newtons (N)

An object that is not moving will stay still:

• If the forces acting on it are unbalanced

• If it gets pushed

• If the forces acting on it are balanced

What effect does friction have on a rolling ball?

• Friction causes the ball to slow down

• Friction causes the ball to roll faster

• Friction has no effect on a rolling ball

Which of these statements is NOT true about weight and mass?

• Mass is a measure of how much matter there is in an object, weight is the force caused by gravity acting on an object.

• Mass changes depending on gravity, weight stays the same regardless of gravity.

• Mass is how much matter there is in an object, weight is a force.

If an object is moving at a constant speed, what will it continue doing unless acted upon by an outside force?

• Rotating

• Gradually slow down

• Moving at a constant speed

When two forces act in the same direction, what effect do they have upon each other?

• The two forces add together

• The two forces cancel each other out

• The two forces subtract from each other