a ball is projected from the top of a tower with a velocity 3i+4j+5k m/s, where i,j,k are unit vector - Physics - Motion In A Plane

Question

a ball is projected from the top of a tower with a velocity
3i+4j+5k m/s, where i,j,k are unit vector along east, north and
verticle upwards respectively If the height of tower is 30 m, its
time of flight is (g =10 m/s2) 1) 5, 2) 3,3) 0 3, 4) 0 5

Pintu B. · Accepted Answer

Dear Student ,
Here is a link given below which will help you to solve this
question with proper explanation

https://www meritnation
com/ask-answer/question/from-the-top-of-the-tower-of-height-50m-a-ball-is-projected/motion-in-a-plane/2654378

Just take the magnitude of the velocity at the time of
calculation
Regards

a ball is projected from the top of a tower with a velocity 3i+4j+5k m/s, where i,j,k are unit vector along east, north and verticle upwards respectively. If the height of tower is 30 m, its time of flight is (g =10 m/s2). 1) 5, 2) 3,3) 0.3, 4) 0.5