Newtons Laws #4

Define Inertia

• The body's tendency to remain in its present state of motion or rest

• The amount of matter a body has

• ...the greater the acceleration, for a constant force

• A ball that is hit hard will accelerate away from the contact spot quickly. Whereas a ball that is hit softly will accelerate less quickly and not go as far.

Define Mass

• The body's tendency to remain in its present state of motion or rest

• The amount of matter a body has

• ...the greater the acceleration, for a constant force

• A ball that is hit hard will accelerate away from the contact spot quickly. Whereas a ball that is hit softly will accelerate less quickly and not go as far.

Define Newton's First Law - Law of Inertia

• For every action there is an equal and opposite reaction (for every force that is exerted by one body on another there is an equal and opposite force exerted by the second body on the first).

• A body at rest or moving with a constant speed will continue in that state unless acted on by an external force.

• The acceleration of a body is proportional (equal to) to the force applied and takes place in the direction in which the force acts

Define Newton's Second Law - Law of Acceleration

• For every action there is an equal and opposite reaction (for every force that is exerted by one body on another there is an equal and opposite force exerted by the second body on the first).

• A body at rest or moving with a constant speed will continue in that state unless acted on by an external force.

• The acceleration of a body is proportional (equal to) to the force applied and takes place in the direction in which the force acts

Define Newton's Third Law - Law of Reaction

• For every action there is an equal and opposite reaction (for every force that is exerted by one body on another there is an equal and opposite force exerted by the second body on the first).

• A body at rest or moving with a constant speed will continue in that state unless acted on by an external force.

• The acceleration of a body is proportional (equal to) to the force applied and takes place in the direction in which the force acts

A ten pin bowling ball keeps moving down the lane until the pins hit it, or it hits the gutter.

• Newton's First Law - Law of Inertia

• Newton's Second Law - Law of Acceleration

• Newton's Third Law - Law of Reaction

A golf ball will stay on the tee at the beginning of the hole, until the golf club applies an external force and hits it away.

• Newton's First Law - Law of Inertia

• Newton's Second Law - Law of Acceleration

• Newton's Third Law - Law of Reaction

A football lying on the ground will remain there unless a force is applied, like a striking foot.

• Newton's First Law - Law of Inertia

• Newton's Second Law - Law of Acceleration

• Newton's Third Law - Law of Reaction

If a softball batter misses the ball, the ball will continue until air resistance, gravity and the catchers hand acts upon it.

• Newton's First Law - Law of Inertia

• Newton's Second Law - Law of Acceleration

• Newton's Third Law - Law of Reaction

A ball that is hit hard will accelerate away from the contact spot quickly. Whereas a ball that is hit softly will accelerate less quickly and not go as far.

• Newton's First Law - Law of Inertia

• Newton's Second Law - Law of Acceleration

• Newton's Third Law - Law of Reaction