Free Fall: Time & Velocity for Red Ball

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SUMMARY

The discussion focuses on a physics problem involving two balls released from a height of 3 meters. The green ball descends with an initial velocity of 6 m/s, while the red ball ascends with the same initial velocity. To determine how long it takes for the red ball to reach the floor, participants emphasize the need to utilize kinematic equations that incorporate time. The relevant equation for free fall motion is v^2 = v0^2 + 2a(x - x0), but additional equations that include time must be considered for a complete solution.

PREREQUISITES
  • Understanding of kinematic equations in physics
  • Knowledge of free fall motion principles
  • Familiarity with initial velocity and acceleration concepts
  • Basic grasp of vertical motion analysis
NEXT STEPS
  • Study kinematic equations that include time, such as s = v0t + 0.5at^2
  • Explore the concept of acceleration due to gravity (g = 9.81 m/s²)
  • Learn about the effects of initial velocity on projectile motion
  • Investigate comparative analysis of velocities upon impact in free fall scenarios
USEFUL FOR

Students studying physics, educators teaching kinematics, and anyone interested in understanding the dynamics of free fall motion and velocity comparisons.

iam911
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Homework Statement


Two balls are are released from a table top of height H = 3m at the same time. The green ball is given an initial velocity v0 = 6 m/s in the downward direction, while the red ball is given an initial velocity v0 = 6 m/s in the upward direction.
How long does it take for the red ball to reach the floor?
Which velocity would be greater when it hits the floor?

Homework Equations


v^2=v0^2+2a(x-x0)

The Attempt at a Solution

 
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iam911 said:

Homework Equations


v^2=v0^2+2a(x-x0)

The Attempt at a Solution

There are more equations for free fall motion, other than that one. Have a look at them.

You'll want an equation that uses t, since the problem is asking for time.
 

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