Answer:
the speed of the command module relative to Earth just after the separation = 4943.2 Km/hr
Explanation:
Given:
speed of space vehicle =5000 km/hr
rocket motor speed = 71 km/hr relative to the command module
mass of module = m
mass of motor = 4m
By conservation of linear momentum
Pi = Pf
Pi= initial momentum
Pf= final momentum
Since, the motion is only in single direction
Where M is the mass of the space vehicle which equals the sum of motor's mass and the command's mass, Vi its initial velocity, V_mE is velocity of motor relative to Earth, and V_cE is its velocity of the command relative to Earth.
The velocity of motor relative to Earth equals the velocity of motor relative to command plus the velocity of command relative to Earth.
V_mE = V_mc+V_cE
Where V_mc is the velocity of motor relative to command this yields
substituting the values we get
= 4943.2 Km/hr
the speed of the command module relative to Earth just after the separation = 4943.2 Km/hr
Speed and tangential acceleration is zero are constant in uniform circular motion
<h3>Further explanation
</h3>
Uniform circular motion is the motion of an object in a circle at a constant speed.
An object moving in uniform circular motion is moving around the circle perimeter with a constant speed. While the speed of the object is constant, its velocity is changing. Velocity, being a vector, has a constant magnitude but a changing direction. Wheres the the tangential component of acceleration is zero in a uniform circular motion. But its value is not zero in a non uniform circular motion.
In uniform circular motion, it is results in change of velocity (velocity has two components such as speed and direction). Because the velocity changes, the acceleration exists. The direction of acceleration in this case is radial, tangential component is zero so the speed is not varying with time. Acceleration exists because of the change in direction of particle’s velocity.
Tangential acceleration quantities are zero throughout the motion. Since a uniform motion itself defines to be a constant velocity motion in which the rotation is going on at a constant speed, the tangential component of acceleration is zero.
<h3 /><h3>Learn more</h3>
- Learn more about uniform circular motion https://brainly.in/question/4807771
<h3>Answer details</h3>
Grade: 9
Subject: physics
Chapter: uniform circular motion
Keywords: uniform circular motion
Answer:
h = 69.6 m
Explanation:
Data:
- Vo = 25 m/s
- t = 2.0 s
- g = 9.8 m/s²
- h = ?
Formula:
Replace and solve:
The building has a height of <u>69.6 meters.</u>
Greetings.
Answer:
Work hasn't been done by Michael because no distance was covered.
Explanation:
Workdone is given by the formula;
Where;
W is the work done
F represents the force acting on a body.
s represents the distance covered by the body.
Hence, work hasn't been done by Michael because no distance was covered, as the table didn't move at all. Therefore, work done is zero.
A ramp is a smooth incline that allows an object to be lifted without being lifted directly up. therefore, an inclined plane is the correct answer.