Answer:
When the ball is held motionless above the floor, the ball possesses only GPE energy.If the ball is dropped, its GPE energy decreases as it falls.If the ball is dropped, its KE energy increases as it falls.
Explanation:
If the ball is held motionless, then its kinetic energy is equal to zero, since kinetic energy depends on the velocity. And the ball is held above the ground, which means it possesses gravitational potential energy.
If the ball is dropped, its height will decrease, therefore its gravitational potential energy will decrease. Along the way, the ball will be in free fall, and therefore its velocity will increase, hence its kinetic energy.
Answer:
The velocity is
Explanation:
From the question we are told that
The initial speed of the hot water is
The pressure from the heater
The height of the hot water before flowing is
The height of bathtub above the heater is
The pressure in the pipe is
The density of water is
Apply Bernoulli equation
Substituting values
=>
=>
=>
