A small ball is thrown horizontally from a height of with an initial speed of . Neglecting air resistance and taking , what is the magnitude of the ball's velocity just before it hits the ground?
Options
A
14 m/s
B
10 m/s
C
2 m/s
D
5.29 m/s
Answer & Analysis
Answer
B
Analysis
To find the magnitude of the ball's
velocity just before it hits the ground, we will calculate both the horizontal
and vertical components of the velocity.
Given:
Height
Initial horizontal speed
Acceleration due to gravity
Calculate the time of flight
Using the formula for vertical motion:
Calculate the vertical component of the
velocity
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