Answer:
A ball is thrown straight up with a speed of 30
m/s. What is the maximum height reached by
the ball?
It is B since they are traveling at the same speed one is positive so the other had to be negative hope this helps;)))))
Given: The mass of stone (m) = 0.5 kg
Raised from heights (h₁) = 1.0 m to (h₂) = 2.0 m
Acceleration due to gravity (g) = 9.8 m/s²
To find: The change in potential energy of the stone
Formula: The potential energy (P) = mgh
where, all alphabets are in their usual meanings.
Now, we shall calculate the change in potential energy of the stone
Δ P = P₂ - P₁ = mg (h₂ - h₁)
or, = 0.5 kg ×9.8 m/s² ×(2.0 m - 1.0 m)
or, = 4.9 J
Hence, the required change in the potential energy of the stone will be 4.9 J
It is a solid when is frozen and a liquid when it melts
Answer:
Elements that are made from only one type of atom
Explanation:
