Motion Under Gravity

1. Who propounded the universal law of graviation?

A . Newton

B . Galileo

C . Copernicus

D . Einstein

2. Astronauts in space cannot stand erect. This is because, in space

A . There is no gravity

B . Viscous forces of the atmosphere are very strong

C . Solar wind exert and upward force

D . Atmospheric pressure is very low

3. Who gave the theroy of gravity?

A . Charles Newton

B . charles Babage

C . Isaac Newton

D . John Adams

4. If an apple is released from an orbiting spacehip, it will

A . Fall towards the Earth

B . Move at a lower speed

C . Move along with the spaceship at the same speed

D . Move at a higher speed

5. If an object is falling from abvoe, its weight remains

A . Zero

B . Same

C . Change

D . None of these

6. The weight of human body is

A . Maximum at the poles

B . Same at every place on the Eart's surface

C . Maximum at the equator

D . More on the mountains the planes

7. Weightlessness is

A . Zero gravity

B . When gravity decrease

C . In vacuum

D . None of the above

8. If the gravitational force of the Earth suddenly disappears, which are of the following will be the dorrect consequence?

A . The weight of an object will become zero but the mass will remain the same

B . The mass of the object will become zero but the weight will remain the same

C . both the mass and the weight of the objecct will become zero

D . The mass of the object will increase

9. An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth.

A . Does not exist at such distance

B . Is neutralized by the attraction of the Moon

C . Provides the necessary speed for its steady motion

D . Provides the necessary acceleration for its motion

10. A Geosynchronous satelite continuously active in its orbit due to centrifugal force which is obtained by

A . The rocket engine that propelled the satelite

B . The gravitational force on the satellite bu the Earth

C . The gravitational force on the satellite by the Sun

D . The gravitational force on the Earth by satellite

Motion Under Gravity

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