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Physics Class 9

Difference between speed & velocity

Why do we say a car moving in a circle at constant speed still has a changing velocity?

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Asked on 01/11/2025
448 views
1 answers 50 votes
Physics Class 9

Acceleration in daily life

When you press the accelerator in a car, what's actually happening in terms of physics?

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Asked on 01/11/2025
459 views
1 answers 50 votes
Physics Class 9

Distance vs displacement

Two friends walk 3 km east and then 4 km north. What's the difference between distance and displacement here?

uniboardhub
Asked on 01/11/2025
372 views
1 answers 50 votes
Physics Class 9

Free fall

Why do objects of different masses fall at the same rate when dropped from the same height?

uniboardhub
Asked on 01/11/2025
418 views
1 answers 50 votes
Physics Class 9

Newton's first law

Why do you lurch forward when a bus suddenly stops?

uniboardhub
Asked on 01/11/2025
488 views
1 answers 50 votes
Physics Class 9

Friction as friend & foe

If friction slows us down, why don't we get rid of it completely?

uniboardhub
Asked on 01/11/2025
307 views
1 answers 50 votes
Physics Class 9

Projectile motion

Why does a cricket ball follow a curved path when hit into the air?

uniboardhub
Asked on 01/11/2025
260 views
1 answers 50 votes
Physics Class 9

Work done concept

If I push a wall with all my strength and it doesn't move, am I doing work?

uniboardhub
Asked on 01/11/2025
302 views
1 answers 50 votes
Physics Class 9

Power in real life

Two people run up the same staircase. One reaches in 5 seconds, the other in 10 seconds. Who does more work?

uniboardhub
Asked on 01/11/2025
200 views
1 answers 50 votes
Physics Class 9

Momentum in collisions

Why does a small bullet cause more damage than a large stone thrown slowly?

uniboardhub
Asked on 01/11/2025
253 views
1 answers 50 votes
Physics Class 9

Uniform motion

A train moves at 60 km/h for 2 hours. Is its motion uniform?

uniboardhub
Asked on 01/11/2025
211 views
1 answers 50 votes
Physics Class 9

Non-uniform motion

A cyclist speeds up, slows down, and turns corners. Is this uniform motion?

uniboardhub
Asked on 01/11/2025
205 views
1 answers 50 votes
Physics Class 9

Distance vs displacement

If you jog 200 m around a circular park and return to the starting point, what's your distance and displacement?

uniboardhub
Asked on 01/11/2025
395 views
1 answers 50 votes
Physics Class 9

Average speed

You drive 30 km at 60 km/h and another 30 km at 30 km/h. Is your average speed 45 km/h?

uniboardhub
Asked on 01/11/2025
241 views
1 answers 50 votes
Physics Class 9

Acceleration basics

A car goes from 0 to 72 km/h in 10 sec. What's its acceleration?

uniboardhub
Asked on 01/11/2025
224 views
1 answers 50 votes
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