Moving a cardboard box
Try every way you can.
Shove it from behind, drag it towards you, or get your arms under it and carry it.
📚 Chapter Learning Kit
Exploring Forces · Class 8 Science · Curiosity
English 5 topics 175 leveled MCQs 85 flashcards 5 games Free
Shared by a Veda teacher · Generated with Veda AI · Oct 2026
⚡ Veda Bites
💡 Concept
💡 Tip
💡 Concept
💡 Concept
💡 Tip
💡 Concept
The whole idea, one bite at a time
Veda Bites are swipeable micro-lessons — each one teaches exactly one idea. Here's a taste from this kit; the app has the full deck.
Only two kinds
Lifting counts as a pull.
Dragging is a pull. Lifting is a pull as well, upwards instead of sideways.
It takes two
Never one object alone.
Push a table and your hand is one object while the table is another.
The question this topic answers
Must it touch?
Every force in the last topic involved touching: a hand on a box, a bat on a ball.
Direct, and indirect
A stick counts.
Pushing a box with your palm is direct. Shoving it with a stick or hauling it with a rope is indirect.
What makes it contact
The test, stated as a test.
A force that acts only while two objects are touching is a contact force.
📖 Smart notes
What you'll study, topic by topic
1
What a Force Is, and What It Does
A force is a push or a pull, and it arises between two objects that are interacting - both of which feel it. It can start, speed, slow, turn or reshape something, and it is measured in newtons.
- A force is a push or a pull applied to an object.
- It arises from the interaction of that object with another one.
- At least two objects are therefore needed for any force.
~45 min · full explanation, examples & memory tricks in the app
2
Contact Forces: Muscles and Friction
Some forces act only while two objects touch, directly or through something solid. Muscles supply one of them; friction is the other, and it always works against the motion.
- A contact force acts only while the two objects are touching.
- Contact may be direct, with a hand, or indirect, through a stick or a rope.
- Muscular force is produced by muscles contracting and lengthening.
~50 min · full explanation, examples & memory tricks in the app
3
Non-Contact Forces: Magnets and Charges
Contact was never part of what a force is. A magnet holds another magnet up across a gap, and a rubbed scale lifts paper it never touches - and in both cases like repels while unlike attracts.
- A non-contact force acts across a gap, with no touching at all.
- A ring magnet hangs above another when like poles face each other.
- Magnetic force acts between magnets and magnetic materials such as iron.
~50 min · full explanation, examples & memory tricks in the app
4
Gravity, Weight and Mass
Everything thrown up comes back, because the Earth pulls it - always attracting, always without contact. Weight is that pull on one object, in newtons, and it is not the same thing as mass.
- Gravitational force is the Earth drawing objects towards itself.
- It is also called the force of gravity, or simply gravity.
- It acts without contact, so it is a non-contact force.
~50 min · full explanation, examples & memory tricks in the app
5
Floating, Sinking and Upthrust
A liquid pushes upwards on anything placed in it, sinking objects included. Compare that push with the pull of the Earth and you have the whole rule for floating and sinking.
- A liquid applies an upward force to any object placed in it.
- That force is called upthrust, or the buoyant force.
- Every liquid gives it, not water alone.
~45 min · full explanation, examples & memory tricks in the app
❓ Leveled MCQ practice
Try the smart MCQs from this kit
175 questions laddered from warm-up to topper-level, each with an explanation. A taste:
What exactly is a force, as this chapter defines it?
Intermediate
A A quantity that every moving object carries inside it
B Something a strong person has more of than a weak one
C The speed at which an object happens to be travelling
D A push or a pull arising between two interacting objects
Show answer & explanation
A push or a pull arising between two interacting objects
It is not a possession. It exists while two objects interact and ends when they stop.
A force comes into play only when how many objects take part?
Beginner
A Three at the least
B One is enough
C At least two
D Exactly four
Show answer & explanation
At least two
Your hand and the table are the two in the chapter example.
A pupil presses an inflated balloon between her hands. It does not go anywhere. Has she applied a force?
Intermediate
A No, because a balloon holds only air
B Yes, she has changed its shape
C Yes, but only while her hands were still
D No, because nothing moved at all
Show answer & explanation
Yes, she has changed its shape
A change of shape is one of the four effects, and it needs no travel whatever.
Read these statements about what a force can do. I. It can set a resting object moving. II. It can change the speed or the direction of a moving one. III. It can change the shape of an object. Which are correct?
Intermediate
A I and II only
B II and III only
C I and III only
D I, II and III
Show answer & explanation
I, II and III
All three are on the list, and one force often does more than one of them.
🃏 Flashcards
Tap a card to flip it
85 flashcards in this kit — the app reviews them with spaced repetition so the right card returns on the right day.
🎮 Learning games
Play your way through this kit
Every game is built from this kit's own content — scores feed your mastery, so playing counts as studying.
Categorization
Fact Or Myth
Sequence Builder
Memory Match
Speed Quiz
Playable in the app
Study it properly — free, in the app
The full Veda Bites deck, complete notes, spaced-repetition flashcards, leveled MCQs, tests and games for this kit — plus Daily Facts and the Arena, every day.