Force & Motion

speed of an object and the direction of its motion

• speed

• instantaneous speed

• velocity

• acceleration

a measure of how hard it is to stop an object

• mass

• inertia

• momentum

• law of conservation of momentum

The distance traveled divided by the time taken to travel the distance.

• speed

• instantaneous speed

• velocity

• acceleration

change in velocity divided by the time it takes for the change to occur

• speed

• instantaneous speed

• velocity

• acceleration

tendency of an object to resist change in its motion

• mass

• inertia

• momentum

• law of conservation of momentum

Two or more forces acting on the same object without causing a change in the motion o f the object

• Force

• Net Force

• Balanced Forces

• Unbalanced Forces

When the effect of forces do not cancel each other out.

• Force

• Net Force

• Balanced Forces

• Unbalanced Forces

A push or pull

• Force

• Net Force

• Balanced Forces

• Unbalanced Forces

The combination of all forces acting on an object

• Force

• Net Force

• Balanced Forces

• Unbalanced Forces

an object at rest stays at rest unless acted upon by an outside force.

• Newtons 1st law

• friction

• rolling friction

• sliding friction