Projectile motion - prof. Walter Lewin #shorts
NO Physics Shorts・2 minutes read
The x-direction velocity remains constant without air drag, while the y-direction velocity changes, allowing a golf ball to be thrown up and caught. A gun can be used to shoot a golf ball up so that it returns to the starting point by aligning the car's midpoint with the ball's position.
Insights
- The x-direction velocity of an object remains constant without external forces like air drag, while the y-direction velocity changes due to gravity, allowing for unique trajectories like shooting a golf ball to return to its starting point.
- By coordinating the timing of a gun's shot with the car's position, a golf ball can be launched in a way that it returns to the initial point, showcasing the intricate relationship between horizontal and vertical velocities in projectile motion.
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Recent questions
How does velocity change in a golf ball's trajectory?
The velocity in the x direction remains constant, only the y direction changes.
Can a golf ball be caught with the same horizontal velocity?
Yes, moving with the same horizontal velocity allows catching the ball.
What method can be used to shoot a golf ball up accurately?
A gun can be used to shoot up a golf ball to return to the starting point.
When should a gun be triggered to shoot a golf ball?
Trigger the gun when the car's midpoint aligns with the ball's position.
What remains constant in a golf ball's trajectory without air drag?
The velocity in the x direction remains constant.
Related videos
Summary
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"Projectile Motion: Golf Ball Returns Perfectly"
- The velocity in the x direction remains constant throughout the trajectory without air drag or friction, while only the velocity in the y direction changes. This means that if a golf ball is thrown up with a certain x component velocity, moving with the same horizontal velocity would allow catching the ball. A gun can be used to shoot up a golf ball in a manner that it precisely returns to the starting point, triggering the gun when the car's midpoint aligns with the ball's position.
