Question

notes - ch12.1 forces
a force is a ____________ or a ____________ that acts on an object
______________ can cause a resting object to move, or it can change the objects velocity
one ______________ (n) is the force that causes a 1 - kilogram mass to accelerate at a rate of 1 meter per second each second (1 m/s²)
1 n = 1 (kg·m)/s²
force is a ______________
the ______________ of the vectors show relative amounts of force
vector forces can ____________ together or ____________ from one another
when the forces on an object are ____________, the net force is ____________, and there is no change in the objects motion
the ____________ is the overall force acting on an object after all the forces are ____________
an ______________ number of individual forces can act on an object to produce a net force of zero
the combination of an initial ____________ velocity and the __________ vertical force of gravity causes a ball to follow a ____________ path when you throw it.
______________ motion is the motion of a falling object (projectile) after it is given an initial forward velocity
____________ and ____________ are the only forces acting on a projectile

Explanation:

A force is a push or pull. It can change an object's state of motion. One newton is the SI - unit of force. Force is a vector quantity. Vector forces can combine or cancel. Balanced forces result in zero net - force and no motion change. Net force is the overall force. Multiple forces can balance to zero. Projectile motion involves initial horizontal velocity, vertical gravitational force, and follows a curved path. Gravity and air resistance (in real - world, neglecting air resistance in ideal cases) act on a projectile.

Answer:

A force is a push or a pull that acts on an object.
A force can cause a resting object to move, or it can change the object's velocity.
One newton (N) is the force that causes a 1 - kilogram mass to accelerate at a rate of 1 meter per second each second (1 m/s²).
Force is a vector.
The lengths of the vectors show relative amounts of force.
Vector forces can combine together or cancel from one another.
When the forces on an object are balanced, the net force is zero, and there is no change in the object's motion.
The net force is the overall force acting on an object after all the forces are combined.
An infinite number of individual forces can act on an object to produce a net force of zero.
The combination of an initial horizontal velocity and the downward vertical force of gravity causes a ball to follow a curved path when you throw it.
Projectile motion is the motion of a falling object (projectile) after it is given an initial forward velocity.
Gravity and (in real - world, air resistance; in ideal cases, just gravity) are the only forces acting on a projectile.