Question

9. 40 kg of water flows out of a tap at uniform speed of 5 ms-¹. Calculate the amount of energy possessed by the water.
[500 J]

10. A train of mass 100 tonnes is moving with a uniform speed of 2 ms-1. Calculate the amount
of energy possessed by the train.

[Take 1 tonne = 1000 kg]
[200,000J]

11. A car expends an energy of 25,000 J while moving at a constant speed of 5 ms-1. What is the mass of car?
[2000 kg]

12. A vehicle expends an energy of 40000 J while
moving at a constant speed of 10 ms-1. What is the mass of vehicle?
(800 kg)


Help❤️​

Answer 1

Answer:

10) m=100×10  

3

kg

Energy=K.E.=  

2

1

​  

mv  

2

 

=  

2

1

​  

×10  

5

×4

E=2×10  

5

J

11)

Explanation: