Answer:
The vertical distance that the ski jumper fell is 417.45 m.
Explanation:
Given;
initial horizontal velocity of the jumper,  = 26 m/s
 = 26 m/s
horizontal distance of the jumper, dx = 240 m
The time of the motion is given by;
dx = Vₓt
t = dx / Vₓ
t = 240 / 26
t = 9.23 s
The vertical distance traveled by the diver is given by;

initial vertical velocity,  , = 0
, = 0

Therefore, the vertical distance that the ski jumper fell is 417.45 m.
 
        
             
        
        
        
Answer:
The ice melts mass is:

Explanation:
Kinetic Energy  



Heat gained by ice= mass(g) x 80 cal 
( 1 cal = 4.184 *10^7er or g cm^2/ sec^2)
Assuming no loss in heat,  in the motion so both continue with temperature 0~C 
To find so the mass (gm) of ice melted 


 
        
             
        
        
        
Because even though the moon is smaller, therefore a weaker gravitational pull, the moon is much closer to the earth than the sun, thus having a greater gravitational pull