Mon Prof Augmenté
Balls Flying from a Cliff
Open to everyone until Wednesday, September 30
To keep it, print it while it is open.
A hand throws balls sideways from a high cliff. Slow balls land soon, but faster balls travel farther and can curve all the way around the planet.
In the picture
- Short dashed arc: a ball falls to the ground near the cliff.
- Longer dashed arc: a faster ball crosses the horizon before landing.
- Long curved path: the fastest ball keeps bending around the planet.
Examples
- A basketball thrown toward a hoop arcs down to the floor.
- Water from a hose arcs down to the garden.
Key takeaways
- Horizontal speed makes a falling path stretch farther.
- With enough speed, a falling object can keep curving around a planet instead of hitting it.
Carry on in the app
Three questions on this lesson, to check the idea stuck. Free in the app while the lesson is in the free week.
At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.
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