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Syllabus

give 7 examples of inertia of rest with explanation

a) a force can stop a lighter vehicle as well as a heavier vehicle which are moving

b) a force can accelerate a lighter vehicle more easily than a heavier vehicle that is moving

c) a force exerted by a lighter vehicle on collision with a heavier vehicle results in both the vehicles coming to a halt

d) force exerted by the escaping air from a balloon in the downward direction makes the balloon to go upwards

TO BE ANSWERED FAST THANK YOU

How to find the least count of a spring balance?

give examples of inertia of direction with explanation

suggest a situation in which object is accelerated and have constant speed

how many types of inertia are there name them

Why is it difficult to walk on sandy or marshy soil ?

define one newton force

A certain particle has a weight of 30N at a place where the acceleration due to gravity is 9.8m/s2

a)What are its mass and weight at a place where acceleration due to gravity is 3.5 m/s2.

b)What will be its mass and weight at a place where acceleration due to gravity is zero.

what is the formula of recoil velocity of a gun?????????

explain why a cricketer moves his hands backwards while catching a fast moving cricket ball.

It is easier to move a book lying on the table than a television lying on it.

please explain newton's third law of motion!

Why are we not hurt at all, while diving into a deep water tank from a height of 10m ?

if a man jumps out from a boat , the boat moves backwards . why?

A cannon of mass 0.5 tonne recoils with a velocity of 0.8m/s, while firing a shell of mass 4g. Calculate the velocity at which the shell leaves the cannon?(hint : 1 tonne = 1000kg)

Experts plzzzzzzzzzzz i need the answers v.v.v.v.v.v.v.faast....plzz tell me all the formulas used here. If the formula

m

_{1}u_{1}+ m_{2}u_{2}= m_{1}v_{1}+ m_{2}v_{2}is used here then ...plzzz specify....(like:) m_{1}= ......, m_{2 }= ......, u_{1}= ......Derive the equation for the conservation of momentum

Why are glass or porcelain articles packed in straw or foam?Pls provide the answer.Chp FORCE AND LAWS OF MOTION.

1) The minute hand of a clock is 7 cm long. Calculate the distance covered and the displacement of minute hand of the clock from 9.00 AM to 9.30 AM.

2) An athlete completes a round of a circular track of diameter 200 m in 20s. Calculate the distance travelled by the athlete.

3)A boy is running on a straight road. He runs 500 m towards north in 2 minutes 10 seconds and then turns back and runs 200 m in 1 minute. Calculate his average speed and magnitude of average velocity during the whole journey.

4) Akshil drove his car with speed of 20 km/h while going to his college. When he returned to his home along the same route , the speed of the car is 30 km/h. Calculate the average speed of the car during the entire journey.

(i) The magnitude of a physical quantity is 8.5Ns.Name the physical quantity (ii) Why is it dangerous to jump out of a moving vehicle? How can the danger be minimized?

name and define three different types of inertia and give an example each

Define force and write its si. Unit

^{2}, calculate the velocity with which the stone will hit the ground.From a rifle of mass 4kg, a bullet of mass 50g is fired with an initial velocity of 35 ms

^{-1}. Calculate the initial recoil velocity of the rifle.The bullet of mass 10g moving with a velocity of 400m/s gets embeded in a freely suspended wooden block of mass700g .what is the velocity aquired by a block

6.A bullet of mass 4g when fired with a velocity of 50m/s,can enter a wall up to a depth of 10cm.How much will be the average resistance offered by the wall?

examples of newton's second law of motion

why are road accidents at high speed are very much worse than accidents at low speed???

^{-2}, ms^{-1}, Kg ms^{-1}, ms^{-2}.which one of the above can be used for measuring momentum of an object ? Writ the physical quantity that needs to be varied if the momentum of a body of a given mass has to be changed.

A body of mass 5 Kg is moving with a velocity of 10 m/s. A force is applied on it so that in 25 s , it attains a velocity of 35 m/s. calculate the value of the force applied.

What os Static inertia and dynamic inertia?

ALL THE FORMULAS IN THIS CHAPTER FORCE AND LAWS OF MOTION CAN ANY ONE SAY ME ASAP

on what factors does inertia of a body depend?

calculate the force required to stop a car of mass 1000 kg and a loaded truck of mass 10,000 kg in 2 seconds ,if they are moving with the same velocity of 5 m per sec?

a rubber ball of mass 50 g falls from a height of 10 cm and rebounds to a height of 50 cm. determine the change in linear momentum and average force between the ball and the ground , taking time of contact as 0.1 s

A body of mass 2 kg, initially moving with a velocity of 10 m/s, collides with another body of mass 5 kg at rest. After collision velocity of first body becomes 1 m/s. Find the velocity of second body.

What is the real definition of Second Law Of Motion

AN OBJECT OF MASS 5 KG IS MOVING WITH A CONSTANT VELOCITY ON A FRICTIONLESS SURFACE. FORCE REQUIRED TO MAINTAIN THE VELOCITY WILL BE?

(A) 5 N (B) 50 N

(C) 0.5 N (D) 0 N

^{2}).Q6. What will be the pressure when 30 N force applied on 120 cm

^{2}area?(a) 2.5 × 10

^{3}N/m^{2}(b) 2.5 × 10

^{4}N/m^{2}(c) 2.5 × 10

^{2}N/m^{2}(d) 5 × 10

^{3}N/m^{2}how does a karate player breaks a slab of ice with a single blow?

An object of mass 2 kg is sliding with a constant velocity of 4 m s

^{–1}on a frictionless horizontal table. The force required to keep the object moving with the same velocity is(a) 32 N (b) 0 N (c) 2 (d) 8 N

a truck starts from rest and rolls down a hill with a constant acceleration .it travels a distance of 400m in 20s . find the acceleration . find the force acting on it if its mass is 7 metric tonne (1 metric tonne = 1000kg).

## A revolver of mass 500g fires a bullet of mass 10g with a speed of 100m/s. Find:

These questions are NOT clubbed.(i) The momentum of the bullet.

(ii) Initial momentum of revolver and bullet as a whole.

(iii) Recoil velocity of the revolver

A Bead Of Mass m is attached to one end of a spring of natural length R And spring constant

K = (√3+1)mg/R . other end of the spring is attached toa point A ON the vertical ring of radius R MAKING AN ANGLE OF 30 DEGREE WITH ITS CIRCUMFERENCE THE NORMAL REACTION AT THE BEAD WHEN THE SPRING IS ALLOWED TO MOVE FROM POINT A

Why can a small mass such as a bullet kill a person when fired from gun?

a stone of 1kg is thrown with a velocity of 20m/s. across a frozen surface of a lake and comes to rest after travelling a distance of 50m. what is the force of friction between the stone and the ice.

a hunter has a machine gun that can fire 50 g bullets with a velocity of 150 m/s . a 60 kg tiger springs at him with a velocity of 10 m/s . how many bullets must the hunter fire per second into the tiger in order to stop him in his track

Why shockers are provided in automobile vehicles?a bullet of mass 20g is horizontally fired with a velocity of 150m/s frm a pistol of mass 2kg. What is the recoil velocity of the pistol?

Why are vehicles fitted with shockers?

Find the initial velocity of the car which is stopped in 10 sec by applying brakes .The retardation due to brakes is 2.5m/sec sq.....

10 applications of newtons second law of motion

Define: INERTIA

^{2}^{ }in the upward direction in both the blocks. If T and T' be the tensions in the two parts of the string, then(a) T = 70.8N and T' = 47.2 N (b) T = 58.8 N and T' = 47.2 N

(c) T = 70.8 N and T' = 58.8 N (d) T = 58.8 N and T' = 58.8 N

A bullet fired from a gun makes a clean whole in a window whereas a stone pebble thrown brakes the whole window.why?

1.Which will have greater inertia. 2.which will have greater momentum. 3.which will stop if equal negative acceleration is applied to both. 4.which will travel greater distance which Will impart greater impulse if collides with the wall.

How much momentum will a dumbbell of mass 10 Kg transfer to the floor if it falls from a height of 80 cm? Take its downwards acceleration to be 10 m/s2?

can someone plz tell me the derivations of equations of motions without graph ..

A railway wagon of mass 0.5t (t-tonne) and moving with a velocity of 10 km/h is hit from behind by another railway wagon of mass 1.5t and moving with 15 km/hr, such that after collision they move togther. Calculate the final velocity of the wagon.

why chinaware is wrapped in straw while transportation?

Two bodies of masses m

_{1}and m_{2}kept on a frictionless surface are pushed by a force F one after the other which produces the acceleration of 4 m/s^{2}and 6 m/s^{2}in them. What would be the acceleration if the same force is applied when these bodies are tied together ?a) 1.2 m/s

^{2}b) 4.8 m/s^{2}c) 2.4 m/s^{2}d) 2.5 m/s^{2}a bullet of mass 10 g is fired from a rifle with a velocity of 800 m/s . after passing through a mud wall 180cm thick, the velocity drops to 100m/s. calculate the average resistance of the wall.

A gunman gets a jerk on firing a bullet.why??

action and reaction forces do not balance each other. why?

when a force acting on a body has equal and opposite reaction then why should the body move at allFew examples of balanced and unbalanced force?

.If first law of motion holds true, why does a ball rolling on ground stop on its own?why is it difficult to balance our body when we accidentally step on a peel of banana give reasons

^{2}An object of mass 1 kg travelling in a straight line with a velocity of 10 m s

^{−1}collides with, and sticks to, a stationary wooden block of mass 5 kg. Then they both move off together in the same straight line. Calculate the total momentum just before the impact and just after the impact. Also, calculate the velocity of the combined object.Show that Newton's first law of motion is contained in second law ?

An object of mass 100 kg is accelerated uniformly from a velocity of 5 m s

^{−1}to 8 ms

^{−1}in 6 s. Calculate the initial and final momentum of the object. Also, find the magnitude of the force exerted on the object.how a karate player can break a pile of tiles with a single blow of his hand

if you shake the branches of tree,the fruits fall down. why?

A ball of mass 400g dropped from a height of 5m. A boy on the ground hits the ball vertically upwards with a bat with an force of 100N so that it attains a vertically height of 20m. The time for which the ball remains in contact with the bat? (g = 10m/s

^{2})^{2})].a car of mass 800kg is travelling with a velocity of 20m/s. when brakes are applied it stops after travelling a distance of 8 m. find the retardation and retarding force.

i need de ans fast .. thank uWhen a carpet is beaten with a stick dust comes out. why?