C. 10 m/s 
You divide 1000 m by 100 s.
1000/100 to find the velocity
        
             
        
        
        
Answer:
t = 2.2 s
Explanation:
Given that,
Height of the roof, h = 24.15 m
The initial velocity of the pumpkin, u = 0
We need to find the time taken for the pumpkin to hit the ground. Let the time be t. Using second equation of kinematics to find it as follows :

Here, u = 0 and a = g

So, it will take 2.22 s for the pumpkin to hit the ground.
 
        
             
        
        
        
Answer:
High density D answers to your questions 
 
        
                    
             
        
        
        
Explanation:
A simple way to state Newton's first law is:
For every action force, there is a reaction force which is equal in magnitude and opposite in direction.