Newtons Third Law: Action and Reaction

Every time your cat's paw hits her toy string, it swings away from her. How does this demonstrate Newton's third law of motion?

• Objects with mass, such as your cat's paw and toy string, will require inertia.

• Objects in action, such as the string to, will experience force.

• For every motion from your cat's paw. there is unbalanced inertia from the string.

• For every action your cat makes, there is an equal and opposite reaction from the string.

What happens when two objects, such as a baseball and a bat, collide?

• One remains still while the other one moves in the same direction.

• They hit each other with the same force in opposite directions.

• They hit each other with unequal force in opposite directions.

• They hit each other with the same force in the same direction.

What does an object do when it accelerates?

• It speeds up.

• It moves in the opposite direction.

• It changes speed in the direction.

• all of the above

What determines an objects mass?

• weight and size

• inertia and friction

• weight and force

• size and force

When two objects with unequal mass collide, what will they do?

• accelerate at different rates

• accelerate in the same direction

• come to a complete stop

• continue at the same velocity

A softball and a volleyball collide with equal speed, and then they accelerate at the same rate. What must be true about the mass of the objects?

• The softball has more mass than the volleyball.

• The softball and the volleyball have equal mass.

• The volleyball has more mass than softball.

• It is impossible to compare the mass of the softball and the volleyball

During P.E., your soccer ball collides with the goalie. What happens to the soccer ball?

• It stops moving completely.

• It accelerates at the same rate and in the same direction as the goalie.

• It accelerates more and in a different direction than the goalie

• It continues moving at the same velocity as before.