Question

spacecraft exploring a distant planet releases a probe to explore the planet's surface a probe Falls freely a distance of 40 metres during the first 4.0 seconds after its release what is the acceleration due to gravity on this planet​

Answer 1

Answer:

Finally, the deep space explorers--spacecraft which break away from the Earth's gravity. Quite a few were added since this page was posted in 2002. It would be nearly impossible to cover more than a few highlights! Most of the original material is retained here, with some significant additions up to 2016.

   Quite a few spacecraft have visited the Moon or orbited around it, e.g. the "Clementine" and "Lunar Prospector". Some lunar explorers--both by the US and the USSR--mapped the moon or landed on it, in preparation for manned landings. The "Luna" series of the USSR conducted 7 soft landing of unmanned probes, two with wheeled "Lunokhod" rovers, and two of those missions returned samples to Earth. The first extraterrestrial rover was the Lunokhod-1 of the Soviet Union, deployed on the Moon in 1970 and exploring it for close to a year. It had a tublike body supported by 8 wheels and a hinged lid lined with solar cells, which opened during the lunar day to soak up sunlight but closed at night to protect the interior. Its mission ended after the open lid accidentally brushed the side of a crater as the vehicle was climbing out, showering the vehicle with moondust.

   Others spacecraft have visited the major planets of the Solar system. Voyagers 1-2, the "Galileo" orbiter (1989-2003)and "Ulysses" have flown past the giant planet Jupiter: the Voyagers have also visited Saturn (as Pioneer 11 had done), and Voyager 2 continued and visited Uranus and Neptune. The Cassini mission of 1997 visited Saturn and in 2005 sent a probe "Huygens" to land on Saturn's big moon Titan.

Explanation: