Answer:
The kinetic energy will be 49000[J]
Explanation:
This problem is the common use of energy conservation when the body is at the top at the point where its elevation is the highest (usually the lowest point is taken as the reference level) at that point the body will have the highest potential energy, then as the body descends its potential energy decreases but its kinetic energy begins to increase. By the time the body reaches the lowest point or reference point, its potential energy will be zero, but its maximum kinetic energy, as all potential energy has become kinetic energy.
Therefore:
This energy will be transformed into kinetic energy at the bottom of the hill.
The spontaneous emission of radiations from an unstable nuclei is known as natural radioactivity. on the other hand, The process of emission of radiations from naturally occurring isotopes when they are bombarded with sub-atomic particles or high levels of X-rays or gamma rays called artificial radioactivity.
<span>So the question is how does heat prefer to remain and to unscramble the letters ONMFRIU. The unscrambled letters mean: UNIFORM. The heat likes to remain uniform because thermodynamic systems always tend to reach thermal equilybrium after some period of time that is specific for each system. </span>
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration due to gravity = 9.81 m/s²
Here, downward direction is considered positive
Time taken by the ball to reach the water is 1.03 seconds
Time in the water = 4.8 - 1.03 = 3.77 seconds
Distance = Speed × Time
⇒Distance = 10.1×3.77 = 38.077 m.
The lake is 38.077 m deep
Total distance the ball traveled is 5.2+38.077 = 43.277 m
Average velocity
Average velocity = 9.02 m/s Downward
Now, s = 43.277 m
t = 4.8 seconds
Here, the negative sign indicates that the ball would be thrown up with a velocity of 14.42525 m/s. When this ball will reach the height of the diving board it will gain the same speed as the initial upward velocity but the direction would change making it positive.
Or
The ball could be thrown directly with a velocity of 14.42525 m/s which would make the sign positive.