A projectile is launched horizontally with an initial speed of v0 = 38.5 m/s at the...

A projectile is launched horizontally with an initial speed of v0 = 38.5 m/s at the top of a cliff in a lake (h = 80 m) What is the speed of the projectile when its height from the water is y = 30 m?

Expert Solution

Summary: speed of the projectile at B ( 30 m above water) =49.6 m/s

Kindly note the symbols used.

Vx and Vy for velocities at B( 30 m above water)

a( ay)for vertical acceleration.( Same as acceleration due to gravity)

S for displacement ( here 80-30 = 50)

t for time taken to reach B.

Ux for initial horizontal velocity ( at A)(given in the question as V0

Uy for vertical initial velocity( at A) = 0 m/s

genius_generous answered 2 years ago

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