Answer:
17.86 m
Explanation:
The first step is to find the velocity of the swimmer.
Velocity, v = s/t
Velocity, v = 5 / 0.27
Velocity, v = 18.52 m/s
Then, we find the height
h = ½gt²
h = ½ * 9.8 * 0.27²
h = 4.9 * 0.0729
h = 0.36 m
Next, we apply the law of conservation of energy
mgH = mgh + ½ mv²
9.8Hm = m(9.8 * 0.36 + 0.5 * 18.52²)
9.8H = 3.528 + 171.4952
9.8H = 175.02
H = 175.02 / 9.8
H = 17.86 m
Therefore, the needed height is 17.86 m
The process of preparing a person to perform strenuous work and to recover from that work as quickly as possible is called training, I bet. Such w<span>arm up exercises as like stretching and other should lead person to the recovery. Hope it will help.</span>
It is considered a substance because it has a uniform and definite composition.
Answer:
-60.82 m/s²
Explanation:
recall that the acceleration due to gravity, g = 9.81 m/s²
We must also realize that during the car crash, the moving car is being brought to a stop. Hence, it is actually a deceleration (i.e a negative acceleration)
Therefore we must add a negative sign to our acceleration to describe the deceleration.
acceleration = - 6.2g
= -6.2 x 9.81 m/s²
= -60.8 m/s²
