Question

a block of metal wing 2 kg is resting on a friction frictionless plane it is struck by a jet releasing water at the rate of 1 kg per second at a speed of 5 metre per second the initial acceleration of the block is what? ​

Answer 1

Answer:

2.5 m/s is the only answer

Explanation:

• The water jet striking the block at the rate of 1kg/s (dm/dt) at a speed of 5m/s (v) will exert a force on the blank,

(W.K.T.) F = v × (dm/dt)

             F = 5 × 1

             F = 5 N  

• Under the action of this force of 5N , the block of mass 2kg will move with an acceleration given by,

(W.K.T.) F = ma

        ⇒ a = F/m = 5/2 = 2.5 m/s²

• Hence the initial acceleration of the block will be 2.5 m/s²

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Answer 2

Answer:

Answer in attachment....