Answer:
the answer is True i just took the test
Explanation:
The element that would have properties most like calcium (ca) is
Beryllium (Be)
Magnesium (Mg)
Strontium (Sr)
Barium (Ba)
This are elements in group two in the periodic table. They are also known as Alkaline earth metals. They have an oxidation state of 2+ since they have two valence electrons in their outermost energy levels.
Rain maybe?? Cause it doesn’t flow??? It comes out of the sky?? Sorry if its wrong or sth
Answer: The velocity of the first ball is 0.875 m/s if the second ball travels at 1.5 m/s after collision.
Explanation:
Given:
= 0.2 kg,
= 0.15 kg
= 2 m/s,
= 0 m/s,
= ?,
= 1.5 m/s
Formula used is as follows.

where,
v = velocity before collision
v' = velocity after collision
Substitute the values into above formula as follows.

Thus, we can conclude that the velocity of the first ball is 0.875 m/s if the second ball travels at 1.5 m/s after collision.