Easy
Medium
Hard
Tricky Question
100
What does this "Fc" symbol represents?
Centripetal Force
100
What is the centripetal force?
The force toward inside( Push the object toward center)
100
what are the Kepler's three laws of planetary motion?
1) All planets moves about the sun in elliptical orbits, having the sun as one of the foci.
2) A radius vector joining any planet to the sun sweeps out the equal areas in equal length of time.
3) the squares of the sidereal periods of the planets are directly proportional to the cubes of their mean distances from the Sun.
100
If a plane crashes on the border between the United States and Canada, where do they bury the survivors?
Survivors are not buried.
200
Does the Earth follow spin or orbital motion?
Both(Spins and orbital)
200
when occurs is uniform circular motion?
When an object moves in the two dimensions circular path
200
What is produced whenever the direction of velocity changes?
Acceleration
200
Some months have 31 days, others have 30 days,but how many have 28 days?
All the months have 28 days.
300
what is the difference between spin and orbital motion?
Spin- Stay in same place and spinning it own axis.
Orbital- Set the object in the center and circling outside of that object.
300
what is the equation for velocity?
300
What is that goes up, but never comes down?
Age