R = 
r - displacement or height
t - time taken
g = 10 m/s-2
t = square root from 2r/g =
= 1.5 seconds
r - displacement or height
t - time taken
g = 10 m/s-2
t = square root from 2r/g =
In order for work to happen you MUST have?
1 answer:
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Answer:
Explanation:
This is a projectile motion problem. We will first separate the motion into x- and y-components, apply the equations of kinematics separately, then we will combine them to find the initial velocity.
The initial velocity is in the x-direction, and there is no acceleration in the x-direction.
On the other hand, there no initial velocity in the y-component, so the arrow is basically in free-fall.
Applying the equations of kinematics in the x-direction gives
For the y-direction gives
Combining both equation yields the y_component of the final velocity
Since we know the angle between the x- and y-components of the final velocity, which is 180° - 2.8° = 177.2°, we can calculate the initial velocity.