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Acceleration

Adapted from Wikipedia · Explorer experience

An apple moving with an elevator, demonstrating physics concepts like acceleration and motion.

What is Acceleration?

Acceleration is a fun idea in physics. It tells us how quickly something is speeding up or slowing down. Imagine when you ride a vehicle and it starts moving from a stop. That feeling of being pushed back into your seat? That’s acceleration!

Acceleration also tells us how fast something is changing its direction. When you turn a corner on a bike, you feel a little tug—that’s acceleration, too!

How We Measure It

We measure acceleration in something called metre per second squared (metre per second squared). This might sound tricky, but it just means how many extra metres something goes every second, for each second that passes.

Acceleration in Action

One cool example is drag racing. In drag racing, specially-built vehicles race to see which can speed up the fastest from a standing start. They use acceleration to get going super quick!

Another fun example is a pendulum swinging back and forth. Even though it moves in a curve, it has both kinds of acceleration: speeding up and slowing down, and changing direction.

Acceleration helps us understand how things move in our everyday lives—from cars to swings to planets!

Images

Animation showing how a pendulum swings back and forth, demonstrating motion and speed.
Diagram showing how distance traveled forms a triangle under a velocity-time graph during constant acceleration.

Related articles

This article is a child-friendly adaptation of the Wikipedia article on Acceleration, available under CC BY-SA 4.0.

Images from Wikimedia Commons. Tap any image to view credits and license.