acceleration due to gravity is -32 ft/s2. a ball is thrown upwards from the surface of the earth with an initial velocity of 16 ft/s. what is its velocity when it hits the ground.
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surface would mean xo = 0
initial velocity has been defined as 16 ft/s
and acceleration of gravity is given by -32 ft/s^2
first determine the time when the ball hits the ground
that means x(t) =0
so solve for t
once you've determined the time the ball hits the ground,
use the velocity equation (1st equation) to determine the speed at which it hits the ground
this is the general way to solve the problem
there are much easier and much quicker ways to solve it,
such as using conservation of energy
can u tell me whether the value will be t=1 or not?
looks like it
velocity = -16?
it hits the ground at the same speed it left the ground