Ch 9.3 Newton's Laws of Motion
Terms in this set (24)
Newton's second law of motion states that an object's acceleration depends on its
mass and on the net force acting on it.
Acceleration is measured in
Force is measured in a unit called the
The smaller the mass of an object, the
less its inertia.
You hit a ping-pong ball & a tennis ball with a tennis racket. Which one will travel farther?
the tennis ball (Newton's 2nd law of motion)
If you leave a cookie on a plate & there is no one else in the house, where will the cookie be in an hour?
on the plate (Newton's 1st law of motion)
If you let the air out of a balloon, what will happen to the balloon?
it will deflate (Newton's 3rd law of motion)
The horse you're riding stops quickly. What happens to you?
you will jerk forward (Newton's 1st law of motion)
A football player kicks a football & a balloon. What will happen?
the football will go further (Newton's 2nd law of motion)
Two ice skaters glide into each other at full speed. What will happen?
They go in opposite direction (Newton's 3rd law of motion)
An astronaut is floating in space where there isn't a gravitational pull. What will happen?
He will float at the same rate unless acted upon by a nonzero net force (Newton's 1st law of motion)
Newton's first law of motion
An object in motion tends to stay in motion, & an object at rest tends to stay at rest, unless the object is acted upon by an outside force
Newton's 2nd law of motion
The acceleration of an object is dependent upon the force acting on the object & the mass of the object.
Newton's 3rd law of motion
Every action has an equal & opposite reaction
You run into your friend while in-line skating, & both of you fall in opposite directions
A book left on the table overnight is there when you return in the morning
A baseball hit with a bat flies farther than a bowling ball hit with a bat
A space shuttle propels gas particles out the back of the shuttle & is able to travel forward through space.
A balloon flies forward when air quickly escapes from it
A soccer ball continues to roll until it hits something
The bike you are riding hits a hole & stops quickly, but you fly forward over the handlebars.
A golfer hits a ping-pong ball & a golf ball. The ping-pong ball flies 10 feet & the golf ball flies 50 yards.
The clothes you left on the floor are still there when you come home from school.
A baseball hit with a wooden bat flies farther than a baseball hit with a plastic bat.
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