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
JulijaS [17]
3 years ago
9

A 30.9 kg rocket has an engine

Physics
1 answer:
Verizon [17]3 years ago
5 0

Answer:

acceleration = 15.8 m/s^2

Explanation:

Weight of rocket which acts downward is W = mass × acceleration due to gravity

w = 30.9 × 9.81

W = 303.129 N

force of 790 N acts upward and it is greater than W hence acceleration is in upward direction and is given by Newton's second law of motion as

790 - W = mass × acceleration

790 - 303.129 = 30.9 × acceleration

486.871  = 30.9 × acceleration

acceleration = 486.871 / 30.9

acceleration = 15.756 m/s^2

acceleration = 15.8 m/s^2

You might be interested in
A 12,000-N car is raised using a hydraulic lift, which consists of a U-tube with arms of unequal areas, filled with incompressib
Natasha_Volkova [10]

Answer:

F = 1958.4 N

Explanation:

By volume conservation of the fluid on both sides we can say that volume of fluid displaced on the side of the car must be equal to the volume of fluid on the other side

so we have

L_1A_1 = L_2A_2

1.20(\pi 18^2) = L_2(\pi 5^2)

L_2 = 15.55 m

so the car will lift upwards by distance 1.2 m and the other side will go down by distance 15.55 m

So here the net pressure on the smaller area is given as

P = P_{atm} + \frac{12,000}{\pi (0.18)^2} + \rho g (1.2 + 15.55)

excess pressure exerted on the smaller area is given as

P_{ex} = \frac{12000}{\pi (0.18)^2} + 800(9.81)(16.75)

P_{ex} = 2.49\times 10^5 Pascal

now the force required on the other side is given as

F = P_ex (area)

F = (2.49 \times 10^5)(\pi (0.05)^2)

F = 1958.4 N

3 0
4 years ago
When Jacob bats a baseball with a net force of 4.719 N, it accelerates 33 m/s2. What is the mass of the baseball?
andreev551 [17]

Answer:

Mass=0.143 kg

Explanation:

From the Newton's second law of motion the force applied to an object is directly proportional to the acceleration produced and the acceleration is in the direction of the force.

F=ma where F is the force, m is the mass of the object and a i the acceleration.

m=F/a

=4.719N/33 m/s²

=0.143 kg

5 0
3 years ago
The table below shows the acceleration of gravity on different bodies in the solar system.
levacccp [35]

Do you remember the formula for potential energy ?

PE = (mass) (gravity) (height)

If the mass and the height are always the same, then the least PE comes from the least gravity. Surely you can find THAT in the table.

4 0
4 years ago
Read 2 more answers
Write two different unit in which mass is measured.​
inessss [21]

Answer:

kilograms and grams

Explanation:

kilograms is the stadard unit for mass according to the SI system.

Grams is another unit for mass.

5 0
3 years ago
Okay, I have three more questions.
Blababa [14]
When a liquid or a gas is heated, it expands and becomes less dense, so it rises, while the cooler, denser liquid or gas sinks. (Not sure if this helps but this is what I hit)
5 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following describes a condition in which an individual would not hear an echo?
    12·2 answers
  • How are weight and mass alike​
    6·1 answer
  • 1 point
    7·1 answer
  • He output voltage and current of a transformer are determined by the
    12·2 answers
  • (Please please please help!) A 38kg child is at the top of a slide that is 2.1m tall.
    13·1 answer
  • When an electromagnetic wave such as light interacts with a solid and polarizes the electron clouds within the atomic structure
    12·1 answer
  • Which is a characteristic of thermal energy transfer through convection?
    5·1 answer
  • Which statement describes a chemical property related to the particles that make up a material
    13·1 answer
  • Aude slipped on ice going 7.6 m/s .What was her velocity before she hit the wal?
    11·1 answer
  • 4. If a 75 kg astronaut moves from Earth to Mars, how much weight did he lose?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!