JEE Main Physics question
A truck is moving on a frictionless surface with a uniform velocity of 10 ms⁻¹. A leak occurs in the water tank of the truck at the rate of 2 kg s⁻¹. What is the speed of the truck after 50 s if the mass of the truck is 100 kg and the mass of water in the truck initially was 100 kg? [UP SEE 2008]
Answer: (B)
Solution
The leaking water drips straight down, carrying away no horizontal momentum relative to the truck (it leaves with the truck's own
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