Answer:
The block didn't slide due to balancing of gravitational force with friction force 
Explanation:
When the block was given a flick the force provided an acceleration to it and it moved up the inclined plane. when the block reached top it was expected that it would slide back but it didn't this happened because of the frictional force acting on the bottom the block which was balancing the gravitational force component along the plane and this prevented sliding back of the block.
static friction  was balancing mg*sin(theta)
fs = mg*sin(theta) 
 
        
             
        
        
        
Answer:
Orbital Time Period is 24 years
Explanation:
This can be explained by the definition of time period.
Time period can be defined as the time taken by an object to complete one cycle, here, time taken to complete one revolution.
Also, we know that an extra solar planet which is also called as an exo planet is that planet which is outside our solar system and orbits any star other than our sun. The system in consideration is extra solar system with a single planet.
Therefore, the time taken by the parent star to move about its mass center is the orbital time period that is 24 years.
 
        
             
        
        
        
Answer:  The Flash, Allen's top speed is Mach 3.3, or 2,532 miles per hour. 
Explanation: