The smallest velocity with which a particle may be projected in order to hit a target at a distance of
40 m on the horizontal plane is (g = 10ms)
Answers
A body projected into the space and is no longer being propelled by fuel is called a projectile.To analyze the projectile motion we use the following concept "Resolution of two dimensional motion into two one dimension motion". It is easier to analyze the motion of projectile as composed of two simultaneous rectilinear motions which are independent of each other:(a) Along the vertical y-axis with a uniform downward acceleration 'g' and(b) Along the horizontal x-axis with a uniform velocity forward.Horizontal Range (OA=X) = Horizontal velocity × Time of flight= u cos θ × 2 u sin θ/g.Here in this question , angle should be mention.And then just substitute the values , you will get the answer.
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