According to Newton;s Second Law of motion, F = ma. Acceleration is the change of velocity per unit time. Since there is no change of velocity, then acceleration is equal to zero. Consequently, the net force F is also equal to zero. The net force is equal to the sum of all the forces acting on the body. These forces are the horizontal force and the frictional force. They are acting in opposite directions. So, the sum must be
F = 0 = Horizontal - Frictional
0 = 100 N - Frictional
Frictional force = 100 N
Answer: Scientist don't know where energy comes from and how it was created but God created energy.
Explanation:
Answer:
Explanation:
As we know that time period of one revolution around Mars is given as
here we know that
here we know that radius of Mars is given as
mass of Mars is given as
now we have
Speed is constant. 50 miles = 1 hour. 600/50 = 12. 1hr(12) = 12 hours.