Home
Class 11
PHYSICS
In the given figure points A and C are o...

In the given figure points A and C are on the horizontal ground & A and B are in same vertical plane. Simultaneously bullets are fired from A, B and C and they collide at D. The bullet at B is fired horizontally with speed of `72/5 km//hr` and the bullet at C is projected vertically upward at velocity of `54/5 km//hr`. Find velocity of the bullet projected from A in `m//s`.

Text Solution

Verified by Experts

The correct Answer is:
5
For collision `u=sqrt(u_(B)^(2)+u_(C)^(2))=sqrt((75/5xx5/18)^(2)+(54/5xx5/18)^(2))=sqrt(4^(2)+3^(2))=5 m//s`
Promotional Banner

Topper's Solved these Questions

  • KINEMATICS

    ALLEN|Exercise EXERCISE-01|55 Videos

  • KINEMATICS

    ALLEN|Exercise EXERCISE-02|57 Videos

  • ERROR AND MEASUREMENT

    ALLEN|Exercise Part-2(Exercise-2)(B)|22 Videos

  • KINEMATICS (MOTION ALONG A STRAIGHT LINE AND MOTION IN A PLANE)

    ALLEN|Exercise BEGINNER S BOX-7|8 Videos

Similar Questions

Explore conceptually related problems

Points A and C are on the horizontal ground and A and B are in same vertical plane at a distance of 1500 m . Simultaneously bullets are fired from A,Bll and C and they collide at O . The bullets at B is fired at an angle of 30^(@) with horizontal towards the ground iat velocity 100 m//s . the bullet at C is projected vertically upwards at velocity of 100 m//s . the bullet projected from A reaches its maximum height at O . Find the time in which bullets will collide (seconds ):

Points A and C are on the horizontal ground and A and B are in same vertical plane at a distance of 1500 m . Simultaneously bullets are fired from A,Bll and C and they collide at O . The bullets at B is fired at an angle of 30^(@) with horizontal towards the ground iat velocity 100 m//s . the bullet at C is projected vertically upwards at velocity of 100 m//s . the bullet projected from A reaches its maximum height at O . Find the velocity of bullet at A :

Points A and C are on the horizontal ground and A and B are in same vertical plane at a distance of 1500 m . Simultaneously bullets are fired from A,Bll and C and they collide at O . The bullets at B is fired at an angle of 30^(@) with horizontal towards the ground iat velocity 100 m//s . the bullet at C is projected vertically upwards at velocity of 100 m//s . the bullet projected from A reaches its maximum height at O . Find the elevation angle angletheta=angleOAC :

When a bullet is fired from a gun

A bullet is dropped from the same height when another bullet is fired horizontally. They will hit the ground

From a rifle of mass 5kg , a bullet of mass 50g is fired with an initial velocity of 108km//h . Calculate initial recoil velocity of the rifle.

A bullet is fired in a horizontal direction from a tower while a stone is simultaneously dropped from the same point then :

Several bullets are fired from a particular gun in various possible directions . If bullets are fired with a speed u, then maximum area of ground covered by the bullets is