Question

If 50gm of bullet is fired from gun with the speed of 200km/hr then calculate the KE..

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Answer 1

Answer:

1387.5×10⁻³ Joules.

Step-by-step explanation:

KE=1/2mv²

50g = 50×10⁻³ Kg

200 km/h = 200×5/18 m/s

                 = 55.5 m/s

∴KE= 1/2×50×10⁻³×55.5

      =1387.5×10⁻³ Joules

Answer 2

Answer:

“An ecosystem is defined as a community of lifeforms in concurrence with non-living components, interacting with each other.”