Answer:
49 m/s
Explanation:
Initial potential energy = final kinetic energy
PE = KE
mgh = ½ mv²
v = √(2gh)
v = √(2 × 10 m/s² × 120 m)
v = 49 m/s
"Acceleration" is the rate at which velocity changes.
So "constant velocity" is a very good definition of "no acceleration".
Choice-B is the correct one.
Answer: True true false true
Explanation:
Part a)
since steelhead jump under the influence of gravity
So we will use kinematic equations
here at the maximum position we know that final speed will be zero
now we will have
so the maximum height that it can reach will be 3.26 m
Part B)
now if it reaches to height 1.8 m with initial speed 8 m/s
so here we will have
There are 2 elements:
Beryllium ( Be + 2 ), metal
Bromine ( Br - 1 ), non - metal
They form the ionic bond:
Be + Br2 → Be Br2
Naming the ionic compound:
on the 1st place is metal. On the 2nd place is non-metal. If compound is binary, use the element name and change ending to - ide .
Answer:
Beryllium Bromide.