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
Georgia [21]
3 years ago
12

Will mark as BRAINLIEST.......

Physics
2 answers:
Alborosie3 years ago
7 0
This is the written answers to find the velocity and acceleration of r

lubasha [3.4K]3 years ago
6 0

Answer:

We have the position vector given in terms of time t. r(t) = t^3*i + t^2*j

To find the velocity vector we have to differentiate r(t) with respect to time.

r'(t) = 3t^2*i + 2t*j

The vector representing acceleration is the derivative of the position vector

r''(t) = 6t*i + 2*j

When time t = 2.

The velocity vector is 3*2^2*i + 2*2*j

=> 12*i + 4*j

The speed is the absolute value of the velocity vector or sqrt(12^2 + 4^2) = sqrt (144 + 16) = sqrt 160

The acceleration vector is 6*2*i + 2*j

=> 12*i + 2*j

The required acceleration at t=2 is 12*i + 2*j and the speed is sqrt 160.

Explanation:

Can I have thx and brainliest?

You might be interested in
In countries where there is very hot and very cold weather, should the gaps between the lengths of railway track be wider or nar
kipiarov [429]
They should be bigger as if it is hot the tracks will expand as it is made of metal and then there is more room for it to expand or contract
5 0
3 years ago
An object starts at 11 m/s with an acceleration of 12 m/s? What is its velocity after 4.5 seconds?
marshall27 [118]

Answer:

65 m/s

Explanation:

v=v0+at <=> v = 11 + 12 t ∧ t = 4.5 s <=> v = 11 + 12×4.5 <=> v = 65 m/s

5 0
3 years ago
The established value for the speed of light in a vacuum is 299,792,458 m/s. What is the order-of-magnitude of this number?
iogann1982 [59]
The order of magnitude is 10⁸ .
6 0
3 years ago
The correct sequence of layers of the atmosphere from innermost to outermost is
serious [3.7K]
Troposphere, stratosphere, mesosphere, thermosphere, exosphere
4 0
3 years ago
1. What are the 2 main categories of nonmetals?
Anettt [7]

the 2 main categories of nonmetals are REACTIVE NONMETALS an NOBLE GAS.

hope it helps

7 0
3 years ago
Other questions:
  • Janice is given a mixture of alcohol and water the teacher tells her that she can use temperature to separate these compounds wh
    7·1 answer
  • What is a Rift Valley ?
    9·2 answers
  • Yesenia wants to bake cookies in her electric oven. The oven will transform electrical energy into ________ energy
    6·2 answers
  • A beam of helium-3 atoms (m = 3.016 u) is incident on a target of nitrogen-14 atoms (m = 14.003 u) at rest. During the collision
    6·1 answer
  • The picture below shows a person exploring an underwater cave in Florida.
    7·1 answer
  • Which diagram is the best representation of gas molecules in a closed container? A. Diagram A B. Diagram B C. Diagram C D. Diagr
    11·1 answer
  • For any degenerate triplet of states in a 3D infinite potential well, what is the maximum number of electrons allowed?
    15·1 answer
  • Which of the following statements is FALSE?
    13·1 answer
  • The International Space Station has a mass of 419,455 kg. When the station
    11·1 answer
  • A neutron star is as dense as Group of answer choices water the nucleus of an atom the center of the Earth our astronomy textboo
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!