State Newton's 1st Law of Motion.
Newton's 1st Law of Motion states that an object at rest will remain at rest, and an object in motion will remain in motion with a constant velocity (which can be zero) and in a straight line, unless acted upon by an external force.
What is the definition of the following term?
Fulcrum
A)the support or point on which a lever turns
B)to change or weaken
C)the comparison of the input and output values of a machine
D)to change the direction of
E)a device which makes work easier
A) the support or point on which a lever turns
What is the definition of the following term?
Inertia
A)a device that limits movement, such as a seat belt
B)resistance to motion caused by surfaces of objects
C)change of speed or direction along a vector.
D)the tendency of matter at rest to stay at rest, and matter in motion to stay in motion unless acted upon by an outside force
E)not being offset by something else; not part of a balanced set
D) the tendency of matter at rest to stay at rest, and matter in motion to stay in motion unless acted upon by an outside force.
Newton's 1st Law of Motion, also known as the Law of Inertia, states that an object at rest will remain at rest, and an object in motion will remain in motion, unless acted upon by an external force.
To understand this law, it is helpful to break it down into two parts:
1. An object at rest will remain at rest: If an object is not moving, it will stay still unless a force is applied to it. This is why you need to push or pull an object to make it start moving.
2. An object in motion will remain in motion: If an object is already in motion, it will keep moving in a straight line at a constant speed unless a force is applied to change its motion. This is why, for example, a moving car will continue to move forward even if you suddenly take your foot off the gas pedal. The force of friction and air resistance will eventually slow it down and stop it.
Newton's 1st Law helps us understand the behavior of objects when no external forces are applied. It is important to note that this law assumes an idealized scenario where there is no friction or other external influences. In reality, factors like friction, air resistance, and gravity often come into play, and additional forces are needed to overcome them and keep objects in motion or at rest.