7th Grade Laws Of Motion printable pdf download

7th Grade Laws Of Motion

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Grade Laws of Motion

Newton’s First Law:

“An object in motion tends to stay in motion, and an object at rest tends to stay at

rest, unless the object is acted upon by an outside force.”

This means that if you leave a book on your coffee table over night, when you

return in the morning, unless an outside force moved it, it will be in the same place. This

also means that if you kick a soccer ball, it will continue moving until it hits something.

However, we all know the ball will eventually stop even if it does not hit a wall—this is

because of the friction between the ball and the ground, and between the ball and the air.

Newton’s Second Law:

“If an unbalanced force acts on a body, that body will experience acceleration (or

deceleration), that is, a change of speed.”

It is easily expressed in the equation: Acceleration= Force/Mass or A=F/M or F=MA

This basically means that that acceleration is produced when a force acts on a mass. The

greater the mass of the object being accelerated, the greater the amount of force needed to

accelerate the object. Everyone knows that heavier objects require more force to move

the same distance than do lighter objects. The Second Law, however, gives us an exact

relationship between force, mass, and acceleration.

Newton’s Third Law:

“Every action has an equal and opposite reaction”

This is exemplified when you jump off of a boat into a lake; your foot and the boat exert

force upon one another. You travel off in one direction and the boat drifts in the opposite

7th Grade Laws Of Motion