Energy & Work (Work Work Work Work)
___________ energy is the energy an object has due to its motion.
Kinetic
___________ can cause the motion or shape of an object to change.
Force (or forces)
___________'s laws of motion can be used to describe how forces affect the motion of objects.
Newton
Newton's First Law, also known as the law of inertia, states that an object at rest will stay at rest unless it is acted on by an _____________ force.
unbalanced
Newton’s ________ law of motion explains how the forces exerted by each object in a collision are related.
third
___________ energy is the energy an object has due to its position, condition, or chemical composition.
Potential
___________ forces only act when objects are touching.
Contact
Motion is measured relative to a _______________ point that does not move.
reference
Newton's first law also states that an object in motion will continue moving with the same _________ and direction unless it is acted on by an unbalanced force.
speed
Newton’s first and second laws explain how the ___________ of an object will change due to forces from a collision.
motion
__________ is defined as the transfer of energy to an object by a force that causes that object to move in the direction of that force.
Work
_________________ forces, such as magnets or gravity, can act at a distance.
Noncontact
When an object is not moving, the forces acting on it are _____________, but when they become ___________________, it will move.
balanced
unbalanced
Newton's second law states that the force exerted by an object is directly proportional to its _____________ and acceleration.
mass
Collisions may cause damage due to the large force and _________________ an object experiences during the collision.
acceleration
Kinetic energy depends on the _______ and speed of an object.
mass
Forces have both strength and direction and combine to find the ______ force on an object.
____________ is the tendency of an object to stay in motion or stay at rest unless it is acted on by an unbalanced force.
Inertia
Using Newton's second law, write the equation for Force (Force = _________ x ___________)
Mass X Acceleration
Extending the _________________ (length of time) of a collision can reduce the acceleration of an object during the collision, which reduces the forces acting on the object.
duration
Gravitational potential energy depends on the mass and _________ of an object.
height
Two people are pushing on a box opposite directions. One person is pushing with 2 Newtons of force to the right. The other person is pushing with 1 Newton of force to the left. Calculate the net force.
1 N to the right
If an object with more mass is in motion, more force must be applied to get the object to _______________ faster.
accelerate
According to Newton's third law, when an object applies force to a second object, the second object applies an __________ and ____________ _________ force to the first object.
equal
opposite
reaction
If a truck with a mass of 15,000 kg collides with a car 1,000 kg, then…
both vehicles will accelerate away from each other, but the car will accelerate more quickly.