Physics, asked by praveenkumar29, 1 year ago

illustrate an example of each of the three laws of motion?


praveenkumar29: Fast answer please

Answers

Answered by BrainlyPromoter
11
Hi....

Newton's first law of motion―
On shaking the branches of a tree, the fruits fall down. This is because on shaking the branches of a tree, the branches come to motion at once but the fruits hung it tends to remain at their initial and hence get detached from branches and fall down.

Newton's second law of motion―
When glass vessel fall on a hard floor, they break, but they do not nreak when they fall on a carpet/sand. This is because when the galss vessel fall from a height on a hard floor, it comes to rest at once so large force is exerted by the floor on the glass vessel so it breaks but when the glass vessel fall on a carpet/sand the time taken for the vessel to come at rest is more so less force is exerted on it by the carpet/sand and it do not break.

Newton's thirdaw of motion―
\underline\bold{Pushing\: a\: wall} When you push a wall i.e. exert a force(action) on the wall then you feel a force against your palm which is actually exerted by the wall and this is reaction.

Hope it helps!
Answered by BrainlyShanu
2

\bf{\huge{\underline{\boxed{\boxed{Hello\:Brainly\:User!}}}}}

\huge{\mathfrak{\underline{Answer:-}}}

\rm{\huge{\underline{\boxed{Newton's\:First\:Law\:Of\: Motion:-}}}}

→ “Every object will remain at rest or in a state of uniform motion unless compelled to change its state by the acting of a net force.”

» It gives the concept of “Inertia”.

\bold{\boxed{Examples:}}

  • When a bus starts suddenly, the person sitting inside the bus tends to fall back.This is because lower part of his body starts moving with the bus, but the upper part of the body tries to remain at rest due to inertia of rest.

  • A football placed at rest on the ground.If you kick the ball, it will fly in the direction you kicked, with certain speed until a forces slows it down or stop.

\rm{\huge{\underline{\boxed{Newton's\: Second\:Law\:Of\: Motion:-}}}}

→ “The rate of change of momentum of a body is directly proportional to the force acting on it and takes place in the direction of net force.”

» It gives the definition of force.

\bold{\boxed{Example:}}

  • Place a ball on the veranda and push it gently. Then the ball accelerates from rest. Thus, we can say that the force is an action which produces acceleration.

\rm{\huge{\underline{\boxed{Newton's\:Third\:Law\:Of\: Motion:-}}}}

→ “If one object exerts a force on the other object, the second object exerts a force on the first one with equal magnitude but in opposite direction.”

(or)

» “For every action there is an equal and opposite reaction”.

\bold{\boxed{Example:}}

  • When a fish swims in water, the fish pushes the water back and water pushes the fish with equal force but in opposite direction.

  • When birds fly, they push the air downwards with their wings and the air pushes back the bird in opposite upward direction.

\huge{\bold{\boxed{\boxed{Hope\:It\: Helps\:You}}}}

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