science test 1 Flashcards
Newton’s _______ law states that objects at rest remain at rest, and objects in motion remain in motion with the
same velocity, unless acted upon by an outside force.
1
Newton’s _________ law states that every time one object exerts a force on another object, the second object
exerts a force that is equal in size and opposite in direction back on the first object.
3
Newton’s ________ law states the acceleration of an object increases with increased force and decreases with
increased mass.
2
A 5 kg object will accelerate ___________ than a 10 kg object if the same amount of force is applied to both,
because it is lighter and easier to move.
faster
A Force can change an object’s ________________ and the object’s direction.
speed
The larger the object the ________________ the force needed to move it (break it’s inertia)
larger
Bigger the car the ___________ it is to move it.
harder
Objects at ________ will stay at ________ unless acted on by a force.
rest, rest
If you place a golf ball on a tee, it will _______ there until you hit it.
stay
When a car moves forward and you get pushed against the seat. Your body was at “_______”, not moving and
_________ moving, causing you to get ___________ into the seat or thrown back.
rest, resisted, pushed
When playing pool, and the cue ball hits another ball it sends its energy/momentum to that ball(s). Either all or
part of the energy/momentum is transferred, but the energy/momentum is __________ LOST.
not
If the cue ball stops completely, it transferred __________ its energy/momentum to the other balls.
all
If the cue ball continues moving after it hits the other balls, it transferred ________ of its energy/momentum to the
other balls but not all of it, so it slowly rolls to the side of the table.
some
EVERY ACTION HAS AN ____________ AND ____________ REACTION
equal and opposite
A speedboat goes forward through the water because the propellers push ____________.
backwards
When you walk on Earth, you push ___________ and __________, to go forward. Because the ground resists
(pushes back) against your feet.
down and backwards
When a golf club hits a golf ball, the reaction force wants to push the club in the ______________ direction a small
amount
opposite
The momentum of an object is not conserved ON EARTH because these outside forces acts on it,_________________ & ________________
friction and gravity
If you push a large chair across the floor, it is _________ to do than a small chair.
harder
Force is a ___________ or a ___________; something that changes the motion of an object.
push or pull
Inertia is the _____________ of an object to a change in the speed or direction of its motion.
resisted
If a shotgun recoils backwards when fired, this is an example of Newton’s ________ law of motion.
3rd
