Vocabulary
A force caused by air, acting in the opposite direction of a moving object.
Pushing a car requires more force than pushing a shopping cart.
Is this an example of the 1st, 2nd or 3rd Law of Motion?
2nd Law of Motion
1st Law
An Object in Motion Stays in Motion
True or False:
True
Force
A push or a pull that can cause the motion of an object to change. It has two important properties: strength and direction.
Acceleration
The speeding up of an object.
A still ball remains still until kicked.
Is this an example of the 1st, 2nd or 3rd Law of Motion?
1st Law of Motion
Heavier objects need a larger force to make them move.
2nd Law
Balanced Force
When two equal forces act in opposite directions the result is that the forces are balanced and there is no motion.
Friction
A force resulting from two objects rubbing against each other.
A ball bounces back with an equal force when thrown down.
Is this an example of the 1st, 2nd or 3rd Law of Motion?
3rd
3rd Law
For every action there is an equal and opposite reaction.
True or False:
True
Unbalanced Force
When one force is stronger than the other the result is motion.
Give me an example of when you would experience air resistance.
Answers will vary
A rolling rock continues unless it hits a tree.
Is this an example of the 1st, 2nd or 3rd Law of Motion?
1st Law of Motion
False
Motion
The process of moving or changing position.
Give me an example of acceleration.
Answers will vary.
A balloon moves in the opposite direction of air pushing out.
3rd Law
More friction means more heat! Give me an example of Friction
True: EXAMPLE PLEASE
Gravity
A force that attracts objects toward the earth. "What goes up, must come down!"