Forces

An object moving through the air experiences ______ __________. For example, a skydiver falling through the air.

Examples of non-contact forces include:

What happens to your mass on the moon? [increases, remains the same, decreases]

The hair on our arms are attracted to the plastic wrap. What type of force is this?

It is important to remember that weight is not the same as mass. The weight of a person of the same mass is larger on earth due to the

________ is all about the interaction between objects.

opposite charges

Two objects sliding past each other experience ___________ forces.

If the force of gravity (weight) of a person on earth is 600 N, what will be his weight on the moon? Remember: The moon has 1/6 gravity of the earth.

Are forces that act between two objects that are physically touching each other.

Like charges

A type of force by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward one another.

The force that the Earth exerts on objects.

The force of gravity (weight) ________________ as the mass increases. [increases or decreases]

Calculate the gravity force (weight) of a skydiver with a mass 70 kg falling towards the Earth? (Remember that gravitational field strength = 10 N/kg on Earth).

The ____________ is an instrument that is used to measure force.

______________forces are forces that act between two objects that are not physically touching each other.