Question

A particle is thrown with the speed u at an angle

Answer 1

Answer:

A particle is thrown with a speed u at an angle of

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Answer 2

Answer:

In first case, it angle is theta then  

Horizontal speed =ucos theta .

since their is no any force , acceleration (a=0) is constant in horizontal direction.

In second case , horizontal speed=vcos phi

Then ,

             Ucos theta=vcos phi

                V=ucos theta /cos phi

Explanation:

A particle is thrown with a speed u at an angle (theta) with the horizontal.when the particle makes an angle (phi) with the horizontal,its speed changes to v: Ans. is v=ucos(theta)sec(phi)

In first case, it angle is theta then  

Horizontal speed =ucos theta .

since their is no any force , acceleration (a=0) is constant in horizontal direction.

In second case , horizontal speed=vcos phi

Then ,

             Ucos theta=vcos phi

                V=ucos theta /cos phi