A cannonball is fired horizontally from the top of a cliff. The cannon is at height...

A cannonball is fired horizontally from the top of a cliff. The cannon is at height H = 100m above ground level, and the ball is fired with initial horizontal speed v₀=0. Assume acceleration due to gravity to be g = 9.80 m/s2.

a)Assume that the cannon is fired at time t=0 and that the cannonball hits the ground at time t_g. What is the y position of the cannonball at the time t_g/2?

b) Given that the projectile lands at a distance D = 100 mm from the cliff, as shown in the figure, find the initial speed of the projectile, v₀.

c)What is the y position of the cannonball when it is at distance D/2 from the hill? If you need to, you can use the trajectory equation for this projectile, which gives y in terms of x directly:

y=H−(gx²/2v²_0x). You should already know v_0x from the previous part.

Solutions

Expert Solution

First of all figure is missing.please provide full details.

There is some problem with D,please crosscheck the unit of D it should not be in mm.

i have solved the problem taking D in mm. and in m. also. please check it.

Please cross check the value of D ,and if there is any chances either comment below or just substitute the value in the solution.

thanku

instead i have solved the problem.

genius_generous answered 1 year ago

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