Ball thrown upwards: Acceleration and Velocity

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SUMMARY

In the discussion about a baseball thrown upwards, it is established that the ball reaches a point of zero velocity at its peak height, where it momentarily stops before descending. However, the acceleration due to gravity remains constant at approximately -9.81 m/s² throughout the entire trajectory, indicating that there is no point where the acceleration is zero. The concepts of velocity and acceleration are clearly defined using the equations: velocity = displacement/time and acceleration = velocity/time.

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  • Understanding of basic kinematics
  • Familiarity with Newton's laws of motion
  • Knowledge of gravitational acceleration (9.81 m/s²)
  • Ability to apply equations of motion in physics
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Hello, all! I was searching online for help w/ my Physics homework and I stumbled upon this website. New member here (:

1. Homework Statement
A baseball is thrown directly upwards.
a. Is there a point on the trajectory where the ball has zero velocity? Explain.
b. Is there a point on the trajectory where the ball has zero acceleration? Explain.

Homework Equations


velocity = displacement/time
acceleration = velocity/time
force = mass x acceleration

The Attempt at a Solution


So I've gotten to the point where I've figured that the velocity is constantly decreasing due to the force of gravity, and that the acceleration is negative and also stays constant. However, I'm really struggling in answering the question pertaining to points of ZERO v/a and putting this in words (that actually make sense). Help would be much appreciated!

Thanks!
 
Physics news on Phys.org
What goes up must come down.

What happens to the ball when it stops going up?
 

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