Physics Topic P8: Forces in Balance

What is a scalar?

• A quantity with only magnitude

• A quantity with both magnitude and direction

• A mathematical operator

• A type of vector

A vector is a quantity that has both magnitude (size) and ________.

• direction

• speed

• mass

• volume

Distance in physics is defined as:

• The amount of space between two points.

• The speed at which an object moves.

• The change in velocity over time.

• The force applied to an object.

Displacement is distance in a given ________.

• direction

• time

• speed

• velocity

The value of a force is measured in:

• Newtons

• Joules

• Watts

• Pascals

Friction is the force opposing the relative motion of two solid surfaces in ________.

• friction

• motion

• contact

• interaction

A contact force is a force that:

• acts at a distance without physical contact

• requires physical contact between objects

• is always attractive

• is always repulsive

A non-contact force acts on things not touching. True or False?

• True

• False

Balanced forces are also known as ________.

• forces in equilibrium

• unbalanced forces

• dynamic forces

• static forces

The unit of force is:

• Newton

• Joule

• Watt

• Pascal