What are you trying to say?
Answer:
h=20.38 m
Explanation:
Given that
Initial speed of object u = 20 m/s
Acceleration 
We know that

Here acceleration and velocity is in opposite direction so the object will come rest after reaching at distance h.When body will reach at its highest position then velocity will become zero(v=0).
Now by putting the values


h=20.38 m
Answer:
1. sturdy shelter
2. i am preaty shure all of them
Explanation:
Answer:
approx 6 × 10^24 kg is earth's mass