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Structure and working of human Heart.

Motion Class 9th NCERT EXERCISE SOLUTIONS.

2. Why is the weight of an object on the moon 1/6th its weight on the earth? Gravitation ncert exercise solutions. @Ncertsolutions99

How to calculate the value of g acceleration due to gravity. @examvita@Ncertsolutions99

Gravitation ncert exercise solutions A stone is allowed to fall from the top of a tower 100 m high and at the same time another stone is projected vertically upwards from the ground with a velocity of 25 m/s. Calculate when and where the two stones will meet. @Ncertsolutions99

Gravitation chapter 9th class Ncert exercise solutions A ball thrown up vertically returns to the thrower after 6 s. Find (a) The velocity with which it was thrown up, (b) The maximum height it reaches, and (c) Its position after 4s. @Ncertsolutions99

Gravitation ncert exercise solutions Calculate the force of gravitation between the earth and the Sun, given that the mass of the earth = 6 × 1024 kg and of the Sun = 2 × 1030 kg. The average distance between the two is 1.5 × 1011 m. @Ncertsolutions99

Gravitation ncert exercise solutions A stone is thrown vertically upward with an initial velocity of 40 m/s. Taking g = 10 m/s2, find the maximum height reached by the stone. What is the net displacement and the total distance covered by the stone? @Ncertsolutions99

Gravitation ncert exercise solutions class 9th A stone is released from the top of a tower of height 19.6 m. Calculate its final velocity just before touching the ground. @Ncertsolutions99

1Gravitation ncert exercise solutions 13. A ball is thrown vertically upwards with a velocity of 49 m/s Calculate " (i) The maximum height to which it rises, (ii) The total time it takes to return to the surface of the earth. @Ncertsolutions99

Gravitation class 9th NCERT EXERCISE SOLUTION Gravitational force on the surface of the moon is only 1/6 as strong as gravitational force on the earth. What is the weight in newton’s of a 10 kg object on the moon and on the earth? @Ncertsolutions99

Gravitation from 9th class Ncert exercise solutions What is the magnitude of the gravitational force between the earth and a 1 kg object on its surface? (Mass of the earth is 6 × 1024 kg and radius of the earth is 6.4 × 106m.) @Ncertsolutions99

iMOTION CLASS 9TH NCERT SOLUTIONS An artificial satellite is moving in a circular orbit of radius 42250 km. Calculate its speed if it takes 24 hours to revolve around the earth. @Ncertsolutions99

Motion chapter 9th class Ncert exercise solutions A ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10 m s-2, with what velocity will it strike the ground? After what time will it strike the ground? @Ncertsolutions99

A motorboat starting from rest on a lake accelerates in a straight line at a constant rate of 3.

An athlete completes one round of a circular track of diameter 200 m in 40 s. What will be the dist.

A stone is thrown in a vertically upward direction with a velocity of 5 m s-1. If the acceleration

A racing car has a uniform acceleration of 4 m s-2. What distance will it cover in 10 s after start?

A trolley, while going down an inclined plane, has an acceleration of 2 cm s-2. What will be its.

A train is travelling at a speed of 90 km h-1. Brakes are applied so as to produce a uniform acceler

A bus starting from rest moves with a uniform acceleration of 0.1 m s-2 for 2 minutes.

A train starting from a railway station and moving with uniform acceleration attains a speed 40 km/h

A bus decreases its speed from 80 km h-1 to 60 km h-1 in 5 s. Find the acceleration of the bus.

During an experiment, a signal from a spaceship reached the ground station in five minutes.

A farmer moves along the boundary of a square field of side 10m in 40 s. What will be the magnitude