Physics

To find the height of the cliff from which the projectile is launched, we can use the vertical motion equation given the projectile's initial velocity, launch angle, and time of flight.

 

Given Data:

Launch angle () = 60°

Initial velocity () = 70 m/s

Time of flight () = 10 s

Acceleration due to gravity () = 10 m/s²

 

Calculate the Initial Vertical Velocity

The initial vertical velocity () can be calculated as follows:

 

Use the Vertical Motion Equation

The vertical position after time can be expressed as:

 

Setting the downward direction as negative and the height of the cliff as the initial position:

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