Gravity
What 2 factors affect gravity?
weight and distance
What are the 4 main types of friction?
sliding, rolling, static, and fluid
List Newton's 3 laws of motion
1. Inertia: Objects in motion stay in motion objects at rest stay at rest unless acted on by an opposing force.
2. f=m x a
3. For every action there is an equal and opposite reaction.
The formula for velocity
v=d/t
An object's change in position relative to a reference point.
motion
Who is credited with discovering gravity?
Newton
A block sitting still on the side of a ramp is an example of what type of friction is the most dominant?
static friction
Which law describes what happens when two skaters push apart in a rink?
3rd law
What is the force of a 100 kg object traveling at 2 m/s2
200 N
SI unit for force
Newton
What is the gravity constant?
9.8 m/s2
What is friction?
force that acts in the opposite direction of the intended motion of an object.
What are the 2 main types of force?
contact and non-contact
What is the formula for momentum?
p = m x v
A force that opposes motion between two surfaces that are in contact
Friction
What do we call the force of gravity on an object?
weight
Air resistance on a flying airplane is an example of what type of friction?
fluid friction
Which one of Newton's Laws fits this statement: More mass means more force needed to accelerate?
2nd law
A car is driven 215 km west and then 85 km east. What is the displacement of the car from the point of origin (magnitude and direction)?
130 km west
A force of attraction between objects that is due to their masses.
Gravity
If someone's mass is 100 kg on Earth, what would it be on the sun?
100 kg
A bowling ball on a bowling lane is an example of what type of friction?
Mostly rolling, with a little sliding
Which law?
The blood in your head rushes to your feet when riding on a elevator that is descending abruptly and stops.
1st law
4 people are playing a tug of war. Two are pulling on the right side. Two are pulling on the left side. On the right side, one is pulling with a force of 50 N and the other with a force of 60 N. On the left side, one is pulling with a force of 40 N, and one is pulling at 60 N. Who won?
The right side
A place or object used for comparison to determine if an object is in motion
Reference Point