6 Questions
What did Newton combine with his own ideas to come up with his first law of motion?
Galileo's findings
According to Newton, what happens to an object that is still or in motion?
It will remain that way unless another force or object acts on it.
What happens to objects in motion according to Newton?
They move at a constant speed and in a straight line.
What force changes the state of a still object to being in motion?
Force applied by someone, like kicking a ball.
What causes an object in motion to eventually stop moving?
Friction and other forces.
Identify two reasons why an object remains motionless according to Newton.
No forces acting on it or equal forces in strength.
Study Notes
Newton's First Law of Motion
- Newton developed his first law of motion by combining Galileo's findings with his own ideas.
- The law states that an object at rest will remain at rest, and an object in motion will continue to move with a constant velocity, unless acted upon by an external force.
- Objects in motion will maintain their state of motion in a straight line, unless a force intervenes to change their direction or speed.
Forces and Motion
- A force is required to change the motion of an object, such as kicking a ball to make it move from rest to motion.
- Friction is a force that opposes motion, occurring when two objects come into contact and move in opposite directions, slowing down the motion of an object over time.
Reasons Objects Stay Still
- An object remains motionless if: • there are no forces acting on it • the forces acting on it are equal in strength, resulting in no net force
Gravity
- Gravity is the force that attracts objects towards the center of the Earth, keeping objects on the ground.
Learn about Newton's first law of motion, which states that an object at rest will stay at rest, and an object in motion will stay in motion unless acted upon by an external force. Explore how this law is exemplified in various real-world scenarios.
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