Answer:
7 s
Explanation:
u = Initial velocity of rock = 12.2 m/s
= Angle of throw = 
x = Displacement in x direction = 25 m
Displacement in x direction is given by

Time taken to reach the ground is 7 s.
Anything that has mass has weight and anything that has weight has mass simple.
Answer:
Mars venus earth and Mercury are inner planets
Jupiter , Saturn , Uranus and Neptune are outer.