Question

a body is projected horizontally from height 78.4m with a velocity 10m/s its velocity at 3sec is g:10m/s take direction of projections on I cap and vertically upwards direction on j cap​

Answer 1

Answer:

A body is projected horizontally from height 78.4m with a velocity 10m/s its velocity at 3sec is g:10m/s take direction of projections on I cap and vertically upwards direction on j cap .

[ Images given in attachment sheet ]

Initial horizontal velocity u x = 10 m/sec .

Initial vertical velocity v y = 0 m / sec .

vertical velocity at t = 3 second

vy = vy - gt

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Velocity after 3 second :

=> 10 í cap- 30 j cap

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Answer 2

Answer:

answer is 10i cap - 30j cap