1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sveta [45]
3 years ago
9

A 2,000 kg rocket is launched 12 km straight up at a constant acceleration into the sky at which point the rocket is travelling

at 750 m/s. a) How much work was done by the rocket
Physics
1 answer:
iogann1982 [59]3 years ago
6 0

Answer:

797700000 J

Explanation:

From the question,

The work done by the rocket, is given as,

W = Ek+Ep............. Equation 1

Where Ek and Ep are the potential and the kinetic energy of the rocket respectively.

Ep = mgh............ Equation 2

Ek = 1/2mv²............. equation 3

Substitute equation 2 and equation 3 into equation 1

W = mgh+1/2mv².............. Equation 4

Where m = mass of the rocket, h = height, v = velocity of the rocket, g = acceleration due to gravity.

Given: m = 2000 kg, h = 12 km = 12000 m, v = 750 m/s, g = 9.8 m/s²

Substitute into equation 4

W = 2000(12000)(9.8)+1/2(2000)(750²)

W = 235200000+562500000

W = 797700000 J

You might be interested in
What is te leading cause of type 2 diabetes
Talja [164]
The insulin levels lead to the cause of type 2 diabetes
7 0
3 years ago
Read 2 more answers
A dog jumps 0.80 m to catch a treat. The dog's displacement vector is shown below.
Brrunno [24]

Answer:D

Explanation:

It was right o khan academy

6 0
3 years ago
9. (02.04 LC)
ycow [4]

Answer:

Molecules speed up

Explanation:

This is caused because of the temperature increasing. The temperature increase is telling us that the thermal energy of the reaction is increasing. When the energy is increased molecules increase their speed, because they have more energy in them

7 0
3 years ago
such smut. when he asks how this goal can be accomplished he volunteers to preview every film that will be shown in town. If Ada
juin [17]
What does this all mean sorry ignore me
6 0
3 years ago
Under what conditions can an object have forces acting on it, but its motion does not change ?
Lady_Fox [76]

Answer: An object at rest has zero velocity - and (in the absence of an unbalanced force) will remain with a zero velocity. Such an object will not change its state of motion.

Explanation: I hoped that helped!!

7 0
3 years ago
Other questions:
  • A speed-time graph is shown below:
    13·1 answer
  • Consider the free body diagram. If the sum of the tension forces is equal to the force of gravity, which description BEST appli
    12·2 answers
  • The coefficient of static friction between a 3.00 kg crate and the 35.0o incline is 0.300. What minimum force F must be applied
    6·1 answer
  • If Justin races his Chevy S-10 down highway 37 north for 2,560 meters in 60 seconds, what is
    6·1 answer
  • A 5000-kg freight car runs into a 10,000-kg freight car at rest. They couple upon collision and move with a speed of 2 m/s. What
    13·1 answer
  • When is thermal equilibrium achived between two identical objects<br><br><br><br>need help ASAP
    10·1 answer
  • Critics of the electoral college argue that the system can result in the selection of —
    13·1 answer
  • Watt (w) is a drived unit why​
    7·1 answer
  • True / False
    10·2 answers
  • A stone is thrown vertically upwards. It decelerates at a rate of 9.8m/s. It reaches a greatest
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!