You look at the units you want, then try to figure out which units ti multiply by to get the units you have to match the units you want. For example, if you want kg/m^3 and have m/s
You can see that you have a length/time(lets denote it d/t for distance over time) and want mass/volume (lets denote it m/d^3). d/t multiplied by time=d but we want m/d^3 so lets multiply our original d/t by time(t) and mass(m) so d/t(t) (m) =dm. However, we want m/d^3 so we will also have to divide by d^4.
(d/t)(t)(m) /(d^4)=m/d^3 = mass/length^3 =mass/volume which was what we wanted our end result to be.
Answer:
t√2.
Explanation:
Given that both are rest at initial position.
The time taken by stone A is t
h= 1/2 g t² ----------1
Lets time taken by stone B is t'
2 h= 1/2 g t'² -----------2
From equation 1 and 2
2 h= 1/2 g t'²
2 x 1/2 g t² = 1/2 g t'²
t'²=2 t²
t' = t√2
So the answer is t√2.
e. sqrt(2) .t
The answer is Gravity only.
A projectile is defined as an object in which the only force acting upon it is gravity. If any other forces are involved the object will no longer be considered as a projectile.
When a projectile is launched in the air, the horizontal velocity remains constant, but vertical velocity is influenced by gravity which pulls until it hits the ground. So the path of the projectile is determined by GRAVITY ONLY.
<span>There are two significant figures: 2 and 0 The significant figures of a number are those digits that carry meaning contributing to its precision. Leading zeros (the zero before the 2) are not significant. </span>
I think the answer is periodic motion.