Answer:
Both balls will hit the ground at the same time
Explanation:
The factor which leads to ball falling is the gravity acting on the ball;
The motions along the path of both balls are independent and both balls will obey the following illustration
Using the third equation of motion
s = ut + ½at²
Where s = distance covered by both balls.
u = initial velocity of both balls. Since both balls start from rest, u = 0m/s
a = acceleration; and it's equal to acceleration due to gravity.
a = g
By substituton
s = 0 * t + ½gt²
s = 0 + ½gt²
s = ½gt²
Make t the subject of formula
gt² = 2s
t² = 2s/g
t = ±√(2s/g)
But time can't be less than 0 (in other words, negative)
So,
t = √(2s/g)
It'll take both balls √(2s/g) time to hit the floor
Explanation:
the unit of area is called a derived unit because it is made of two fundamental unit metre and metre.
Since the small body of water is connected to a larger body of water. so the small body of water will than be called a stream
Answer:
(c) 4M
Explanation:
The system is a loaded spring. The period of a loaded spring is given by
<em>m</em> is the mass and <em>k</em> is the spring constant.
It follows that, since <em>k</em> is constant,
where <em>C</em> represents a constant.
When the period is doubled, 
.
Hence, the mass is replaced by 4M.
