satellites terms
Define satellite
What is A projectile that falls around the earth instead of into it.
Define escape speed
Speed needed to overcome gravity and get into orbit if launched vertically
In a circular orbit does the satellite change speed? Why or why not?
No, gravity is always perpendicular to the motion and the gravity only changes the direction of the satellite.
Can we calculate the force of gravity? (Formula)
Fg = G(m1m2)/r2
Is there a force between any two objects in the universe?
What are the shapes of the orbit of satellites.
What are Circular and Elliptical (oval)
Is the escape speed for Jupiter larger or smaller than the Earths? Why?
Larger, because Jupiter has more mass
How long does it take a near-Earth satellite to orbit the Earth?
90 minutes
In what direction does gravity act?
What is Attractive force towards the center of mass
Do we see force all the time? Why or why not?
No, because it's too small to see with the human eye.
Define period
What is The time it takes for a satellite to complete one orbit
Does the speed of a satellite around the Earth depend on the Earth's mass?
Yes, because the Earth's mass creates the gravitational pull
What is the period of the moon?
28 days
How are force (Fg) and mass related?
Directly
Does it take more time for the Earth or Pluto to orbit around the sun? Why?
Pluto, because it's farther away from the sun, so it goes slower.
Define Apogee
The FARTHEST position of the satellite from the object it is orbiting.
guess a number 1-10
i ran out of questions
2
Is the earth at the perigee or apogee when it is summer?
Apogee
How are force (Fg) and distance related?
Indirectly
What is Newton's 4th law about?
Gravity - the universal law of gravity states that gravity works the same anywhere in the universe, and every bit of mass creates gravity.
Define Perigee
The CLOSEST position of the satellite from the object it is orbiting.
Although the escape speed from the surface of the Earth is 11,200m/s could a rocket with enough fuel escape at any speed? Why or why not?
Yes, The speeds that come from the calculation are for a finite initial launching force.
Where is the earth moving the fastest at the apogee or the perigee?
This is why there is less daylight in the winter than summer. Faster speed means the sun goes across the sky in less time.
Inverse square law
What is The force of gravity decreases with inverse square of the distance.
How fast would you have to throw the ball for it to go
around the world?
8,000m/s = 18,000mi/hr