Motion Force Study Guide

Question 1

Compare contact and non-contact forces.

Answer 1

Contact forces occur when two objects are in direct contact, like friction. Non-contact forces occur whether the object is in direct contact or not, like gravity.

Question 2

Compare balanced and unbalanced forces.

Answer 2

Balanced forces are opposite in direction and equal in strength. Net force = 0.
Unbalance forces are opposite in direction and unequal in strength. Net force > 0

Question 3

Explain the interaction between Mass and Inertia.

Answer 3

The greater the mass of an object, the greater its resistance to change in motion (inertia). The lesser the mass of an object, the lesser its resistance…