Flashcards
Newton's 1st Law Review
Flashcards do conjunto (14)
- 1What is force?a push or a pull
- 2What is the magnitude and direction of the net force?50 N to the left
- 3What is the unit used to measure force?N
(Newton, named for Sir Issac Newton) - 4Are the forces balanced or unbalanced?The forces are unbalanced
(net force is not zero and the cart will change motion) - 5What is the force that pulls objects toward the center of the Earth?Gravity
(Fg) - 6What is the Normal Force?the force of the surface pushing back on the object
(Fn) - 7What is the name of the type of force that resists (or opposes) motion?friction
- 8When the sum of all forces is zero, the forces are _____________.Balanced
(no change in motion) - 9What is net force?Net force is the sum of all forces
- 10When calculating the ______ ________, you subtract forces that are opposite and add forces in the same direction.Net Force
- 11What is the magnitude and direction of the net force?5N to the right
- 12Is the object in motion? How do you know?The object is in motion to the right.
The applied force (Fa) is larger than the friction (Ff), meaning that the object will move to the right.
- 13What is Newton's 1st Law of Motion?An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
- 14What is motion?a change in the position of an object over time