Uniform Acceleration: Solve for Initial Velocity

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SUMMARY

The discussion focuses on solving a physics problem involving uniform acceleration to determine the initial velocity of a ball thrown vertically upwards from a height of 30 meters. The ball takes 3.0 seconds to hit the ground. Using the kinematic equation for uniformly accelerated motion, the initial velocity can be calculated as approximately 15.5 m/s upwards, factoring in gravitational acceleration.

PREREQUISITES
  • Understanding of kinematic equations for uniformly accelerated motion
  • Knowledge of gravitational acceleration (9.81 m/s²)
  • Ability to manipulate algebraic equations
  • Familiarity with basic physics concepts such as displacement and velocity
NEXT STEPS
  • Review kinematic equations, specifically the equation for displacement: s = ut + 0.5at²
  • Study the concept of free fall and its relation to initial velocity
  • Explore examples of projectile motion to understand vertical throws
  • Practice solving similar problems involving initial velocity and time of flight
USEFUL FOR

Students studying physics, educators teaching kinematics, and anyone looking to strengthen their understanding of motion under uniform acceleration.

davon806
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Homework Statement


Help please,I have no idea...This is the last question of my hw

A boy stands at the edge of a cliff which is 30m above the ground and throws a ball vertically upwards.It hits the ground 3.0s later.Find the initial velocity of the ball.


Homework Equations





The Attempt at a Solution

 
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Can you think of any kinematic (constant acceleration) equations that might apply?
 

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