Consider the following statements.
1. According to Kepler's first law, each planet moves in an elliptical orbit around the sun, the sun being at one of the foci of the ellipse.
2. According to Kepler's Second Law, the radius vector of any planet relative to the sun sweeps out equal areas in equal times, that is the areal velocity of the radius vector of the planet is constant.
Which of the statements given above is/are correct?

The movement of the Moon around the Earth is due to . . . . . . . .

A. Gravitational force

B. Centrifugal force

C. Concentric force

D. Nuclear force

Which one of the following statements about a satellite orbiting around the earth is correct?

A. Satellite is kept in orbit by remote control from ground station

B. Satellite is kept in orbit by retro-rocket and solar energy keeps it moving around the earth

C. Satellite requires energy from solar panels and solid fuels for orbiting

D. Satellite does not required any energy for orbiting

What will happen if an object is thrown into space with the speed of 8 km/s?

A. The object will go into space

B. It will return to Earth

C. It will rotate into the orbit of Earth

D. It will burst out

Astronauts feel . . . . . . . . weight inside the spacecraft.

A. more

B. less

C. zero

D. depends on G force