<u>Answer</u>
1/4
<u>Explanation</u>
half life = 15 years
decay period = 30 years
The number of half-lives = 30 ÷ 15
= 2 half lives
1 ⇒(<em>after 1st half life</em>) ⇒ 1/2 ⇒ (<em>after 2nd half life</em>) ⇒ 1/4
The fraction that remained is 1/4.
Answer:
well actually that depends
Explanation:
that depends on the force of the launch of throw but a common would be like in 2-3secobds
<span>When a force is applied to an object for an amount of time, it is known as Impulse.</span>