Answer:
5760 J
Explanation:
From the question given above, the following data were obtained:
Mass of block = 48 kg
Height (h) = 12 m
Gravitational field strength (g) = 10 N/Kg
Gravitational potential energy (PE) =?
The gravitational potential energy stored by the block can simply be obtained as follow:
PE = mgh
PE = 48 × 10 × 12
PE = 5760 J
Therefore, the gravitational potential energy stored by the block is 5760 J
Answer:up
Explanation:The partials are lighter
(a) As the car is moving with constant velocity, it means the rate change of velocity does not change, therefore the average acceleration of the car is zero.
Thus, there is no acceleration, when velocity is constant.
(b) Average acceleration,
Here, v is final velocity and u is the initial velocity and 
is the time interval.
As twelve seconds later, the car is halfway around the track and traveling in the opposite direction with the same speed, therefore
Thus, the average acceleration of the car is 
in the direction to the left.
Answer:
Copper is the best conductor
The power developed by the electric motor is 6000 Watts
<h3>Definition of power </h3>
Power is defined as the rate at which work is done. Mathematically, it is expressed as
Power = Work / time
But
Work = mass (m) × acceleration due to gravity (g) × height (h)
Work = mgh
Therefore,
Power = mgh / t
With the above formula, we can obtain the power developed by the motor.
<h3>How to determine the power </h3>
- Mass (m) = 200 Kg
- Height (h) = 6 m
- Acceleration due to gravity (g) = 10 m/s²
- Time (t) = 2 s
- Power =?
Power = mgh / t
Power = (200 × 10 × 6) / 2
Power = 12000 / 2
Power = 6000 Watts
Learn more about power:
brainly.com/question/5684937
