A space probe is preparing to land of the surface of one of Jupiter’s moons to...
A space probe is preparing to land of the surface of one of Jupiter’s moons to search for evidence of life. When the probe is 5800 m above the moon’s surface, it is moving downward at 230 m/s. At this moment, the probe fires its retrorockets and accelerates upward at 5.8 m/s2. When its speed decreases to 26 m/s, though, the retrorockets fail and the probe falls, impacting the surface 28 s later. Using a coordinate system with the origin on the moon’s surface and with the positive direction pointing upward find: (a) the probe’s speed just before it hit the surface, and (b) the acceleration of gravity on this moon.
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A space probe is preparing to land of
the surface of one of Jupiter’s moons to...
(a) Imagine that a space probe could be fired as a projectile from the Earth's surface...
(a) Imagine that a space probe could be fired as a projectile from the Earth's surface with an initial speed of 4.98 104 m/s relative to the Sun. What would its speed be when it is very far from the Earth (in m/s)? Ignore atmospheric friction, the effects of other planets, and the rotation of the Earth. (Consider the mass of the Sun in your calculations.) (b) What If? The speed provided in part (a) is very difficult to achieve...
A rock is projected upward from the surface of the Moon, at time t = 0...
A rock is projected upward from the surface of the Moon, at time t = 0 s, with an upward velocity of 35.0 m/s. The acceleration due to gravity at the surface of the Moon is 1.62 m/s?, and the Moon has no atmosphere. What is the closest value of the time t when the rock is descending with a speed of 25.0 m/s. 32 s. 22 s. 55 s. 48 s. 37 s.
a. An attacker at the base of a castle wall 3.65 m high throws a rock...
a. An attacker at the base of a castle wall 3.65 m high throws a rock straight up with speed 7.40 m/s from a height of 1.55 m above the ground. Will the rock reach the top of the wall? If so, how fast is it moving when it reaches the top. If not, what initial speed must it have to reach the top? b. To defend the castle, a rock is thrown downwards from the top of the wall...
An attacker at the base of a castle wall 3.65 m high throws a rock straight up with speed 7.40 m/s from a height of 1.55 m above the ground.
a. An attacker at the base of a castle wall 3.65 m high throws a rock straight up with speed 7.40 m/s from a height of 1.55 m above the ground. Will the rock reach the top of the wall? If so, how fast is it moving when it reaches the top. If not, what initial speed must it have to reach the top? b. To defend the castle, a rock is thrown downwards from the top of the wall with...
A space probe is fired as a projectile from the Earth’s surface with an initial speed...
A space probe is fired as a projectile from the Earth’s surface with an initial speed of 1.75*10^ 4 m/s . What will its speed be when it is very far from the Earth? Ignore atmospheric friction and the rotation of the Earth
With detailed explanation please. Note on homework solutions: In order to receive full credit for homework...
With detailed explanation please.
Note on homework solutions: In order to receive full credit for homework solutions, your work needs to be presented clearly, neatly, and completely. Answers should have units (when applicable) and be given to no more than three significant figures. 1. A block of mass my = 5.00 kg sits on a frictionless plane inclined at an angle of B = 30° and is connected by a massless, unstretchable cord over a massless, frictionless pulley to a...
6-9 6) A train starts from rest and accelerates uniformly, until it has traveled 5.4 km...
6-9
6) A train starts from rest and accelerates uniformly, until it has traveled 5.4 km and acquired a 6) velocity of 31 m/s. The train then moves at a constant velocity of 31 m/s for 400 s. The train thern decelerates uniformly at 0.065 m/s2, until it is brought to a halt. The distance traveled by the train during deceleration, in km, is closest to: A) 6.0 B) 7.0 C) 6.7 D) 63 E) 7.4 Situation 2.2 A rock...
An astronaut weighs 850 N on the Earth’s surface. When the astronaut lands on Planet X,...
An astronaut weighs 850 N on the Earth’s surface. When the astronaut lands on Planet X, she weighs 190 N. To the nearest tenth of a m/s2, what is the acceleration of gravity on Planet X? (hint: first find her mass!) An elevator car loaded with two passengers has a mass of 1200 kg. What tension must be applied by the elevator cable to give the car an acceleration of 1 m/s2 upward? Round your answer to the nearest newton....
When jumping straight down, you can be seriously injured if you land stiff-legged. One way to...
When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 89.8-kg man just before contact with the ground has a speed of 8.70 m/s. (a) In a stiff-legged landing he comes to a halt in 3.21 ms. Find the magnitude of the average net force that acts on him during this time. (b) When he bends his...
When jumping straight down, you can be seriously injured if you land stiff-legged. One way to...
When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 75-kg man just before contact with the ground has a speed of 5.5 m/s. (a) In a stiff-legged landing he comes to a halt in 2.4 ms. Find the average net force that acts on him during this time. _________N (b) When he bends his knees, he...
A rock is projected upward from the surface of the Moon, at time t = 0 s, with an upward velocity of 35.0 m/s. The acceleration due to gravity at the surface of the Moon is 1.62 m/s?, and the Moon has no atmosphere. What is the closest value of the time t when the rock is descending with a speed of 25.0 m/s. 32 s. 22 s. 55 s. 48 s. 37 s.
With detailed explanation please.
Note on homework solutions: In order to receive full credit for homework solutions, your work needs to be presented clearly, neatly, and completely. Answers should have units (when applicable) and be given to no more than three significant figures. 1. A block of mass my = 5.00 kg sits on a frictionless plane inclined at an angle of B = 30° and is connected by a massless, unstretchable cord over a massless, frictionless pulley to a...
6-9
6) A train starts from rest and accelerates uniformly, until it has traveled 5.4 km and acquired a 6) velocity of 31 m/s. The train then moves at a constant velocity of 31 m/s for 400 s. The train thern decelerates uniformly at 0.065 m/s2, until it is brought to a halt. The distance traveled by the train during deceleration, in km, is closest to: A) 6.0 B) 7.0 C) 6.7 D) 63 E) 7.4 Situation 2.2 A rock...
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