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Newton's 1st Law of Motion
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What is friction?,
1) It is a contact force between 2 surfaces . 2) It resists motion
What is Mass vs. Weight?Also mention their SI Units.
Mass: The amount of matter something is made of. SI Units: kg, Weight: The force of gravity acting on an object's mass. Unit= Newton
What are Balanced forces? When is an object said to be at Equilibrium?
Net force=0, Objects may either be 1.) At rest, 2.) Having constant velocity
What is Force? Is it a Scalar or Vector Quantity?
It is A push or a pull applied to an object . It is a Vector quantity
Which cart has the greatest inertia? Why? 1. a 1-kg cart traveling at 4 m/s, 2. a 2-kg cart traveling at 3 m/s, 3. a 3-kg cart traveling at 2 m/s, or, 4. a 4-kg cart traveling at 1 m/s
Cart 4
Why does a child "fall back" when you yank the wagon forward?
1)When the wagon child's lower body starts moving as his leg is in contact with the wagon. 2) The child's upper body is still at rest, so it falls back.
Why Shouldn't you stand in a bus while its moving?
1) When-the bus breaks, your lower body stops motions while your upper body is still in the state of motion,so you can fall.
Why should we wear a Seat belt?
I
What does inertia NOT dependent upon?
SPEED
What does Inertia depend upon?
Only on MASS
What is Inertia?
Inertia is a property of matter, by which a mass resists changes to it's motion
What is Newton's 1st Law of Motion?
Objects at rest remain at rest, objects in motion remain in motion unless acted upon by an unbalanced force.