which statement is true about wind energy? A) It is clean and non-polluting. B) It is only effective near water. C) It is costly
2 answers:
You might be interested in
Answer:
The speed of the car when load is dropped in it is 10.90 m/s.
Explanation:
Given that,
Mass of the railroad car, m₁ = 11600kg
Mass of the load, m₂ = 5420kg
It can be assumed as the speed of the car, u₁ = 16 m/s
Initially, it is at rest, u₂ = 0
The additional load is dropped onto the car.
Let v is the speed of the car. It can be calculated using the conservation of momentum as :
So, the speed of the car when load is dropped in it is 10.90 m/s.