Laws of Motion Test Flashcards
a push or pull of an object
force
a push or pull on an object by another object that is touching it
contact force
a force that one object can apply to another object without touching it
noncontact force
an attractive force that exists between all objects
gravity
what is the amount of matter in all objects
mass
what is the gravitational force exerted on an object
weight
how does the gravitational force between objects is affected by their mass and distance between them
When the mass increases the gravitational force also increases
What are the three kinds of friction
- static friction
- fluid friction
- sliding friction
Forces of 10N up, 10N down, 10N to the right, and 25Nto the left are acting on a ball. Which direction is the ball moving
15N to the left
Forces of 100N up, 100N down, 85N to the right, and 100N to the left are acting on a ball. Which direction is the ball moving
15N to the left
Which Newton’s law states that An object in motion will stay in motion and an object at rest will stay at rest, unless unbalanced force act on it
Newtons first law
the combination of all the forces action on an object
net force
forces acting on an object that combine and form a net force of zero
balanced forces
Forces acting on an object that combine and form a net force that is not zero
unbalenced forces
Which kind of forced cause a change int he object’s direction (balanced or unbalanced)
Unbalanced
why do objects stop moving
friction
Which of Newtons laws state that the acceleration of an object is equal to the net force acting on the object divided by the objects mass
Newtons second law
Which of Newtons law of Motion states that when one object exerts a force on a second object, the second object exerts an equal force in the opposite direction on the first object
Newtons third law
What is the formula for momentum
mass time velocity: p=mv
Why is it harder for a large truck to stop than a small car when they’re moving at the same speed
the bigger truck has more momentum and mass
what is an example of inertia?
falling leaves
what are some examples of newtons second law
- pushing a shopping car
- itting a ball
- car crash
- rocket launch
what are some examples of Newtons third law
- A horse pulls a cart
- when the hammer hits the nail
- magnets attract a paper clip
