Lunar Lander The Lunar Lander of mass 2.0 ×10^4 kg made the last 150 m of its trip to the Moon's

Name: Problem 34, Chapter 2: College Physics
Uploaded: 2020-07-03T19:11:50-08:00
Duration: 1 min 51 s
Channel: Kevin Shryock
Description: Lunar Lander The Lunar Lander of mass 2.0 ×10^4 kg made the last 150 m of its trip to the Moon's surface in 120 s descending at approximately constant speed. The Handbook of Lunar Pilots indicates that the gravitational constant on the Moon is 1.633 N / kg . Using these quantities, what can you learn about the Lunar Lander's motion?

step 1 Welcome back to Numrod. My name is Kevin Sharak. We have a scenario here where the lunar lander

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Lunar Lander The Lunar Lander of mass $2.0 \times 10^{4} \mathrm{kg}$ made the last 150 $\mathrm{m}$ of its trip to the Moon's surface in 120 $\mathrm{s}$ descending at approximately constant speed. The Handbook of Lunar Pilots indicates that the gravitational constant on the Moon is 1.633 $\mathrm{N} / \mathrm{kg}$ . Using these quantities, what can you learn about the Lunar Lander's motion?

   Lunar Lander The Lunar Lander of mass $2.0 \times 10^{4} \mathrm{kg}$
made the last 150 $\mathrm{m}$ of its trip to the Moon's surface in 120 $\mathrm{s}$
descending at approximately constant speed. The Handbook
of Lunar Pilots indicates that the gravitational constant on the
Moon is 1.633 $\mathrm{N} / \mathrm{kg}$ . Using these quantities, what can you
learn about the Lunar Lander's motion?

College Physics

Eugenia Etkina,… 1st Edition

Chapter 2, Problem 34

Instant Answer

Solved by Expert Kevin Shryock

07/03/2020

Step 1

This means that the net force acting on the Lander is zero. This is because the force of gravity pulling it down is being opposed by the force of the Lander's engine pushing it up. Show more…

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Lunar Lander The Lunar Lander of mass $2.0 \times 10^{4} \mathrm{kg}$ made the last 150 $\mathrm{m}$ of its trip to the Moon's surface in 120 $\mathrm{s}$ descending at approximately constant speed. The Handbook of Lunar Pilots indicates that the gravitational constant on the Moon is 1.633 $\mathrm{N} / \mathrm{kg}$ . Using these quantities, what can you learn about the Lunar Lander's motion?

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Key Concepts

Uniform Motion

Uniform motion refers to movement at a constant speed in a straight line, meaning that the acceleration is zero. In this scenario, even though the lander is descending, its constant speed indicates that the net force acting on it is zero, reflecting a balance between all forces.

Gravitational Acceleration

Gravitational acceleration is the acceleration due to gravity that any object experiences due to a celestial body's mass. It is calculated as the gravitational constant multiplied by the object's mass, which in this case is specific to the Moon, affecting the weight of objects on its surface.

Force Equilibrium

Force equilibrium is the condition where all the forces acting on an object cancel each other out so that there is no net force. For the lunar lander descending at a constant speed, this implies that the upward thrust provided by the engines exactly balances the downward gravitational force, resulting in zero acceleration.

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