Comet Wild 2 In 2004, a NASA spacecraft named Stardust flew within 147 miles of Comet Wild 2 (pronounced “Vilt 2 ” ), zooming by it at 6200 m/s, about six times the speed of a rifle bullet. Photos taken by Stardust show that the comet is roughly spherical, as shown in Figure 12 , with a radius of 2.7 km. It has also been determined that the acceleration due to gravity on the surface of Wild 2 is 0.00010 g . What is the minimum speed needed for an object to escape from the surface of Wild 2? Figure 12-40 Comet Wild 2 and some of its surface features, including the Walker basin, the site of unusual jets of outward-flowing dust and rocks. (Problem 79)
Comet Wild 2 In 2004, a NASA spacecraft named Stardust flew within 147 miles of Comet Wild 2 (pronounced “Vilt 2 ” ), zooming by it at 6200 m/s, about six times the speed of a rifle bullet. Photos taken by Stardust show that the comet is roughly spherical, as shown in Figure 12 , with a radius of 2.7 km. It has also been determined that the acceleration due to gravity on the surface of Wild 2 is 0.00010 g . What is the minimum speed needed for an object to escape from the surface of Wild 2? Figure 12-40 Comet Wild 2 and some of its surface features, including the Walker basin, the site of unusual jets of outward-flowing dust and rocks. (Problem 79)
Comet Wild 2 In 2004, a NASA spacecraft named Stardust flew within 147 miles of Comet Wild 2 (pronounced “Vilt 2”), zooming by it at 6200 m/s, about six times the speed of a rifle bullet. Photos taken by Stardust show that the comet is roughly spherical, as shown in Figure 12, with a radius of 2.7 km. It has also been determined that the acceleration due to gravity on the surface of Wild 2 is 0.00010g. What is the minimum speed needed for an object to escape from the surface of Wild 2?
Figure 12-40 Comet Wild 2 and some of its surface features, including the Walker basin, the site of unusual jets of outward-flowing dust and rocks. (Problem 79)
3.63 • Leaping the River II. A physics professor did daredevil
stunts in his spare time. His last stunt was an attempt to jump across
a river on a motorcycle (Fig. P3.63). The takeoff ramp was inclined at
53.0°, the river was 40.0 m wide, and the far bank was 15.0 m lower
than the top of the ramp. The river itself was 100 m below the ramp.
Ignore air resistance. (a) What should his speed have been at the top of
the ramp to have just made it to the edge of the far bank? (b) If his speed
was only half the value found in part (a), where did he land?
Figure P3.63
53.0°
100 m
40.0 m→
15.0 m
Please solve and answer the question correctly please. Thank you!!
You throw a small rock straight up from the edge of a highway bridge that crosses a river. The rock passes you on its way down, 5.00 s after it was thrown. What is the speed of the rock just before it reaches the water 25.0 m below the point where the rock left your hand? Ignore air resistance.
Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
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