Construct the displacement graph for the subway shuttle train as shown in Figure 2.30(a). Your graph should show the position of the train, in kilometers, from t = 0 to 20 s. You will need to use the information on acceleration and velocity given in the examples for this figure.
ASTRO Lesson 5 10/23 We learn more from robotic space flight, but we need manned space flight to inspire the next generation ▯ ▯ Probes to Mercury (not much of an atmosphere, harder to get a probe on the planet) Mariner 10 (1973) o First probe to visit Mercury o First probe to use a gravitational slingshot to get to another planet o Mapped part of the surface of Mercury Messenger (2004, arrived in Mercury in 2008) o First probe to orbit Mercury o Did a few fly-bys of Mercury, around Sun to try to bleed off some speed o Eventually went into orbit o Fully mapped surface of Mercury ▯ ▯ Probes to Venus (Roughly size of Earth, like a sister planet, clouds on Venus, under clouds is roughly certain death (not like Earth)) Russians made it to Venus first in Space Race Soviet Venera probes (1960s – 1970s) o Venera 3 The first man-made object to crash land on another planet Meant to be a probe of the atmosphere, not a lander o Venera 4/5/6 Got data of the atmosphere Didn’t reach the surface intact o Venera 7 first to “land” – parachute broke right before it landed, didn’t land right side up first pictures of the surface of Venus o Venera 8-12
