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give 7 examples of inertia of rest with explanation
How to find the least count of a spring balance?
give examples of inertia of direction with explanation
how many types of inertia are there name them
What os Static inertia and dynamic inertia?
define one newton force
what is the formula of recoil velocity of a gun?????????
a train is moving with acceleration along a straight line with respect to ground aperson in train finds that-
A.newtond law2 is false and 3law is true
B.newtons 3 law is false but newtons 2law is true
C.all laws r false
D.all laws are true
explain why a cricketer moves his hands backwards while catching a fast moving cricket ball.
Show that Newton's first law of motion is contained in second law ?
please explain newton's third law of motion!
AN ASTRONAUT IN OPEN SPACE IS AWAY FROM HIS SPACE SHIP.HOW CAN HE RETURN ON THE ROCKET?
if a man jumps out from a boat , the boat moves backwards . why?
Derive the equation for the conservation of momentum
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.
name and define three different types of inertia and give an example each
1. How does force of attraction between two objects change when the distance between them is reduced to half?
2. What happens to the force between the two objects, if
(i) The mass of one object is doubled?
(ii) The distance between the objects is doubled.
3. Calculate the force of gravitation between the earth and the sun, given that the mass of the earth = 6x1024 kg and of the sun = 2x1030 kg. The average distance between the two is 1.5 x 1011 m.
Define force and write its si. Unit
A monkey of mass 30 kg climbs a rope which can withstand a maximum tension 360 N . Find the maximum acceleration which this rope can tolerate for the climbing of monkey (g = 10 m/s^2) .
Experts, please answer fast.
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.
State Newton’s third law of motion and how does it explain the walking of man on
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
examples of newton's second law of motion
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.
why are road accidents at high speed are very much worse than accidents at low speed???
A Boy whose mass is 75 kg holds in his hands a bag weighning 40 N .with what force does the floor push up on his feet.
EXPLAIN WITH FIGURE
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.
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?
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 bullet of mass 0.02kg is fired from a gun weighing 7.5 kg .if the initial velocity of the bullet is 200 m/ s ,calculate the speed with which the gun recoils.
What is the real definition of Second Law Of Motion
You are applying force on the pan of single pan weighing balance and the pointer points to 100g. What is the force in newtons applied by you ?
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
using second law of motion derive the relation between force and acceleration . a bullet of 10g strike a sand bag at a speed of 1000m/s and gets embeded after travelling 5 cm .calculate
(1)the resistive force exerted by sand on bullet
(2)the time taken by the bullet to come to rest
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 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
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
a rubber ball rebounds when struck against a hard floor. give reason.
inflated balloon lying on the surface of a floor moves forward when pricked with a pin.why
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?
Give reasons : Water drops are removed from from wet clothes by giving light jerk to the cloth.
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.....
A gardener waters the plants by a pipe of diameter 1 mm. The water comes out from the pipe atthe rate of 10 cm3/sec. The reactionary force exerted on the hand of the gardener is?
A bullet fired from a gun makes a clean whole in a window whereas a stone pebble thrown brakes the whole window.why?
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 ..
why chinaware is wrapped in straw while transportation?
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 pile of one rupee coins remains intact when the lowest point in the pile is struck quickly by a knife. give reason
A gunman gets a jerk on firing a bullet.why??
action and reaction forces do not balance each other. why?
Few examples of balanced and unbalanced force?
why is it difficult to balance our body when we accidentally step on a peel of banana give reasons
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.
WHEN we shake the branches of a mango tree why do mangoes fall down?(explain)
B-WHen we shake a carpet to remove the dust particles,in this phenomena is something related to inertia.
object of mass 100 kg is accelerated uniformly from a velocity of 5 m
to 8 m s−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/s2)
which one would have more inertia 10 kg mass and 5 kg mass
When a carpet is beaten with a stick dust comes out. why?
If the engine of a car provides an acceleration of 2m/s^2 to start it from rest, assuming the mass to be roughly 1000kg,calculate time after which car the comes to rest , if the engine is turned off after 15 seconds.(Frictional Force = 15N)
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