Answer:
The value is 
Explanation:
From the question we are told that
    The time taken to travel to the planet from earth is 
     The  time to be spent on the ship is   
 
Generally speed can be obtained using the mathematical relation represented below 
        
The 2 in the equation show that the trip is a round trip i.e going and coming back 
=>    
=>     
 
        
             
        
        
        
The attractive force between all matter in the universe is gravity.
        
                    
             
        
        
        
Im pretty sure A-10 b-0 c-40
        
             
        
        
        
Answer:
The value of the acceleration of gravity of the Unknown Planet = 1.14 
Explanation:
length of the pendulum (L)= 1.15 m
Time period (T)= 6.29 seconds
We know that time period  of a simple pendulum is given by
⇒ T = 2 ×
 ×  
 
put the values in the above formula we get 
⇒ T = 2 ×
 × 
⇒ 6.29 = 2 ×
 × 
By solving the above equation we get 
⇒ g = 1.14 
This is the value of the acceleration of gravity of the Unknown Planet.
 
        
             
        
        
        
Answer:
B. Moon
Explanation:
In physics, that would be the answer.