From the edge of a cliff, a 0.46 kg projectile is launched with an initial kinetic energy of 1430 j. the projectile's maximum upward displacement from the launch point is +150 m. what are the (a) horizontal and (b) vertical components of its launch velocity? (c) at the instant the vertical component of its velocity is 65 m/s, what is its vertical displacement from the launch point? take up to be the positive direction.

Explanation:

Given

mass of Projectile(m)=0.46 kg

Initial Kinetic Energy=1430 J

Maximum upward displacement from Launch point=150 m

v=78.85 m/s

and

initial horizontal velocity

Initial vertical velocity

(c)vertical velocity at any instant=65 m/s

Since initial vertical velocity is 54.16 m/s

so 65 m/s will be acquired when projectile started falling below cliff

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