FRICTION
CLASS 9 & 10 · PHYSICS
Same Push, Different Surface
ICE
WOOD
SANDPAPER
red arrow = friction (opposes motion)
tyre grip
🛑
brakes
👟
walking
STEP 1
prostudypk.com · free MCQ tests
REMEMBER
Friction opposes motion
Depends on roughness and weight
Reduce it: oil, ball bearings, smooth surfaces
Useful: brakes, tyre grip, walking
Free test → prostudypk.com
CLASS 9 & 10 · PHYSICS
Why do you slip on ice but not on a road?
Friction in 25 seconds
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