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cassiek
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Help! Free fall, looking for time of motion off of a bridge.
A person standing on a bridge throws a ball upward with an initial velocity of 23 m/s straight upwards so if it comes back down it will just pass the edge of the bridge and keep going down.
a) where will the ball be after 5.0s?
b) how long will it take to hit the water if the water 10m below the ball's release point?
c) what velocity will the ball have when it reaches the water?
The kinematics equations of motion.
for a) I used the equation Δd = vΔt + 1/2aΔt² (where d is displacement, v is the initial velocity, a is acceleration due to gravity, and t is the time) and I solved for d. I got -7.5 m. I'm hoping this is correct!
I don't know how to tackle b) and c) though, so advice is GREATLY APPRECIATED!
Homework Statement
A person standing on a bridge throws a ball upward with an initial velocity of 23 m/s straight upwards so if it comes back down it will just pass the edge of the bridge and keep going down.
a) where will the ball be after 5.0s?
b) how long will it take to hit the water if the water 10m below the ball's release point?
c) what velocity will the ball have when it reaches the water?
Homework Equations
The kinematics equations of motion.
The Attempt at a Solution
for a) I used the equation Δd = vΔt + 1/2aΔt² (where d is displacement, v is the initial velocity, a is acceleration due to gravity, and t is the time) and I solved for d. I got -7.5 m. I'm hoping this is correct!
I don't know how to tackle b) and c) though, so advice is GREATLY APPRECIATED!