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A bullet is to be fired with a speed of 200 ms –1 to hit a target 200 m away on a level ground. If g = 10 ms –2 , the gun should be aimed 1. directly at the largest 2. 5 cm below the target 3. 5 cm above the target 4. 2 cm above the target 5. 2 cm below the target


A bullet is to be fired with a speed of 200 ms–1 to hit a target 200 m away on a level ground. If g = 10 ms–2, the gun should be aimed









1.    2.    3.    4.    5.   


Grade:12th Pass

2 Answers

Akash Deep Goel
4 Points
12 years ago

Actually All Options Are Wrong.Answer Is 5m Above The Target

This Is A Case Of Projectile Launched Horizontally.

Range=200m

Height =?

Let Height Be x

Velocity,v=200m/s

Using Formula

Vsqrt(2h/g)=Range

 

Akash Deep Goel
4 Points
12 years ago

And From This FOrmula H = 5M

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