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
inna [77]
3 years ago
14

A rocket's acceleration is 6.0 m/s2. Assuming it starts at 0 m/s, how long will it take for the rocket to reach a velocity of 42

m/s? 250 s 0.14 s 7.0 s 290 s
Physics
1 answer:
elena-s [515]3 years ago
7 0
You said "<span>A rocket's acceleration is 6.0 m/s2.".

That just means that its speed increases by 6 m/s every second.
Whenever you look at it, its speed is 6 m/s faster than it was
one second earlier.

If it starts out with zero speed, then its speed is 6 m/s after 1 second,
12 m/s after 2 seconds, 18 m/s after 3 seconds . . . etc.

How long does it take to reach 42 m/s ?

Well, how many times does it have to go 6 m/s FASTER 
in order to build up to 42 m/s ?

That's just (42/6) = 7 times.

Writing it correctly, with the units and everything, it looks like this:


(42 m/s) / (6 m/s</span>²)

= (42/6)  (m/s) / (m/s²)

= (42/6)  (m/s · s²/m)

=  7 seconds
You might be interested in
Which of the following substance are not formed by chemical bonds
Sliva [168]
<span>Which of the following substance are not formed by chemical bonds? </span>A MIXTURE 
3 0
3 years ago
Define infer in science.
tia_tia [17]

Answer :Scientific Definition of Inference

In science, there are a few different types of inferences, but in general an inference is: “An educated guess made through observation.” You might use these inferences to share a potential reason why something happens or how it happens.

Explanation:

8 0
3 years ago
A 30 kg dog runs at a speed of 15 m/s. What is the dog's kinetic energy (in jewels)? Round the answer to two significant digits.
mel-nik [20]

Answer:

It would be 12.34

Explanation:

6 0
3 years ago
#1 a person weighs 540n on earth what is the persons mass.
bixtya [17]

Answer:

G on earth =10N/Kg

W= mg

540= m x 10

m = 540/10

m= 54 Kg

W= mg

W= 66 x 10

W= 660 N

G on moon =1.6 N/Kg

#1

W= mg

W= 54 x 1.6

W=86.4 N

#2

W=mg

W= 66 x 1.6

W= 105.6 N

8 0
2 years ago
When a customer in Japan was quoted a price of .39 cents a pound he thought he was being charged .39 a kilogram. He was shocked
Anon25 [30]

Answer: $85.80

Explanation: 100kg is equalvilent to 220 lbs, then you multiply 220 by .39 and then you have your answer :)

4 0
2 years ago
Other questions:
  • A 10-m-long glider with a mass of 680 kg (including the passengers) is gliding horizontally through the air at 34 m/s when a 60
    10·1 answer
  • The beat your doctor listens to through a sethoscope is the sound of the four values opening
    7·1 answer
  • In which situation can you be at rest and moving at the same time
    14·1 answer
  • How much work does an athlete do if she<br> raises a 5N kettle bell 2 m off the ground?
    7·1 answer
  • Yes or no? Do the following have co2 emissions?
    12·1 answer
  • Which item stores the most electrical potential energy within its capacitors?
    6·1 answer
  • What was the long-term effect of the Northwest Ordinance of 1787?
    15·1 answer
  • Random question, what does hot dog REALLY mean?
    14·1 answer
  • The diagram shows a stone tied to a string in circular
    13·1 answer
  • Find the area of the part of the plane 5x 3y z = 15 that lies in the first octant.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!