Space probes voyager 1 and Voyager 2 were launched in 1977
1. You need to know the velocity of the projectile (V0) 2. The expressions for the range and height assume no air resistance (in vacuum) 3. The units must be consistent e.g. metres and g = 9.81 m/s2 Range in metres for 30 degree launch angle = sin 60 x V02 / 9.81 Range in metres for 45 degree launch angle = sin 90 x V02 / 9.81 Range in metres for 60 degree launch angle = sin 120 x V02 / 9.81 Max. height in metres for 30 degree launch angle = (V0 x sin 30)2 / 2g Max. height in metres for 45 degree launch angle = (V0 x sin 45)2 / 2g Max. height in metres for 60 degree launch angle = (V0 x sin 60)2 / 2g 2g is of course 9.81 x 2 = 19.62 m/s2 For interest, at 45 degree launch angle the max. height is 25% of the range.
start 1914 to 1918 == ==
In a non-leap year, including the start and end dates in the calculation, there are 286 days between the two dates. In a leap year, including the start and end dates in the calculation, there are 287 days between the two dates.
2
Inclusive of the dates given there are 24 days.
Viking Lander 1 and Viking Lander 2 Yes, but there are more than that.
The Viking 1 and Viking 2 missions consisted of both an orbiter and a lander. The lander landed on the surface of Mars to collect data and images.
Lander
lander
It was Mars 2, from the Soviet Mars Lander Program.
Viking 1 was launched on August 20, 1975.
The two VIKING probes arrived in Mars orbit in 1976 when they started sending photographs back to Earth. The two orbiters continued sending photographs and the landers conducted experiments on the planet's surface until they failed as follows:Viking 2 Orbiter: July 1978 Viking 2 Lander: April 1980 Viking 1 Orbiter: August 1980 Viking 1 Lander: November 1982.
None, since satellites don't "land", they orbit. There are 6 landers and rovers on the Martian surface, 2 of which were lost at arrival. NASA reports 3 types of Martian Exploration missions: (1) Fly-by missions: Mariner 3, Mariner 4, Mariner 6, Mariner 7 (2) Orbiter missions (the satellites): Mariner 8, Mariner 9, Viking 1, Viking 2, Mars Observer, Mars Global Surveyor, Mars Climate Orbiter, 2001 Mars Odyssey, Mars Express, Mars Reconnaissance Orbiter (3) Lander and Rover missions: Viking 1 Lander, Viking 2 Lander, Pathfinder Rover, Polar Lander (lost), Deep Space 2 (lost), Spirit Rover, Opportunity Rover, Phoenix Mars Science Laboratory Rover is scheduled to launch in 2011.
NASA's Viking Mission to Mars was composed of two spacecraft, Viking 1 and Viking 2, each consisting of an orbiter and a lander. The primary mission objectives were to obtain high resolution images of the Martian surface, characterize the structure and composition of the atmosphere and surface, and search for evidence of life. Viking 1 was launched on August 20, 1975 and arrived at Mars on June 19, 1976.
The spacecraft that landed on Mars in the 1970s was the Viking 1 Lander. It was the first spacecraft to have landed on Mars on July 20, 1976.
Vicious Viking - 1967 was released on: USA: 1 February 1967
The Backyardigans - 2004 Viking Voyage 1-10 was released on: USA: 1 November 2004