Kinematics 2D: Horizontal Velocity of Spiked Volleyball

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In summary, the horizontal velocity of a spiked volleyball can range from 10-20 meters per second and is calculated using the formula Vx = V * cosθ. Several factors can affect this velocity, including the initial velocity and angle of the spike, air resistance, and external forces. Air resistance, also known as drag force, can decrease the horizontal velocity and make the ball travel a shorter distance. It is possible for the horizontal velocity to be greater than the initial velocity if the spike angle or external forces maximize the velocity.
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Cheddar
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Homework Statement


A volleyball is spiked so that it has an initial velocity of 15m/s directed downward at an angle of 55degrees below the horizontal. What is the horizontal component of the ball's velocity when the opposing player fields the ball?

Homework Equations


horizontal velocity = velocity * cos(angle)


The Attempt at a Solution


15m/s * cos(55) = 8.6m/s
It seems like I'm missing something.
 
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  • #2
Looks good to me.
 
  • #3
Really? I spent a long time on this thinking it was too easy to be correct...haha.
Thank you!
 

1. What is the horizontal velocity of a spiked volleyball?

The horizontal velocity of a spiked volleyball depends on several factors, including the initial velocity of the ball, the angle at which it is spiked, and any external forces acting on it. Generally, the horizontal velocity can range from 10-20 meters per second.

2. How is the horizontal velocity of a spiked volleyball calculated?

The horizontal velocity of a spiked volleyball can be calculated using the formula Vx = V * cosθ, where Vx is the horizontal velocity, V is the initial velocity, and θ is the angle at which the ball is spiked. This formula assumes no external forces are acting on the ball.

3. What factors can affect the horizontal velocity of a spiked volleyball?

Several factors can affect the horizontal velocity of a spiked volleyball, including the initial velocity of the ball, the angle at which it is spiked, air resistance, and any external forces such as wind or spin on the ball.

4. How does air resistance affect the horizontal velocity of a spiked volleyball?

Air resistance, also known as drag force, can have a significant impact on the horizontal velocity of a spiked volleyball. As the ball travels through the air, it experiences a drag force that slows it down. This can decrease the horizontal velocity and make the ball travel a shorter distance.

5. Can the horizontal velocity of a spiked volleyball be greater than the initial velocity?

Yes, it is possible for the horizontal velocity of a spiked volleyball to be greater than the initial velocity. This can occur if the ball is spiked at an angle that maximizes the horizontal velocity, or if there are external forces such as wind or spin that increase the velocity of the ball.

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