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
nekit [7.7K]
3 years ago
5

The motion of a particle is given by the equation v = 8t3 – ½ t2 + 4t, where v is in meters and t is in seconds. Compute the val

ue of a at t=0. I got 98 m/s^2 but the answer key says 50m/s^2 so I think it must have been a typo. Can someone please check?
Physics
1 answer:
Jlenok [28]3 years ago
4 0

Answer:

4 m/s²

Explanation:

v(t) = 8t³ – ½ t² + 4t

Acceleration is the first derivative of velocity with respect to time.

a = dv/dt

a = 24t² – t + 4

At t = 0, the acceleration is:

a = 4

You might be interested in
Does the force of kinetic friction depend on the weight of the block? explain.
drek231 [11]
Yes for an object moving on a horizontal plane, R = mg (where mg = weight). therefore, for an object moving on a horizontal plane: F = μmg



7 0
3 years ago
A car of mass 1535 kg collides head-on with a parked truck of mass 2000 kg. Spring mounted bumpers ensure that the collision is
dexar [7]

A car of mass 1535 kg collides head-on with a parked truck of mass 2000 kg. Spring mounted bumpers ensure that the collision is essentially elastic. If the velocity of the truck is 17 km/h (in the same direction as the car's initial velocity) after the collision, what was the initial speed of the car <u>20kmh</u>

<h3>What is collision ?</h3>

A collision in physics is any situation in which two or more bodies quickly exert forces on one another. Despite the fact that the most common usage of the word "collision" refers to situations in which two or more objects clash violently, the scientific usage of the word makes no such assumptions.

The following are a few instances of physical encounters that scientists might classify as collisions:

  • Legs of an insect are said to collide with a leaf when it falls on one.
  • Every contact of a cat's paws with the ground while it strides across a lawn is seen as a collision, as is every brush of its fur with a blade of grass.

To learn more about collision  from the given link:

brainly.com/question/27736776

#SPJ4

7 0
1 year ago
The velocity v(t) in the table below is increasing for 0_t_12.
katen-ka-za [31]
<span>When n=4 subdivisions distance traveled = 40 X 12 = 480

When n=2 subdivisions distance traveled = 30 X 6 = 180 

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.
</span>
7 0
3 years ago
Read 2 more answers
What is the focus of the bandwagon advertising style?
spin [16.1K]
Bandwagon advertising is basically persuading people to join something or buy something because, "everyone else is."

For example: "Vote for Charlie to be the class president! Everyone else is!"
6 0
3 years ago
Read 2 more answers
A rocket takes off from Earth and starts flying to Mars. What happens to the force of gravity between the rocket and Earth as th
lawyer [7]

The force of gravity between Earth and Mars will decrease.

The gravitational law is given as-

           F = G mM/r²

  here,  m= mass of rocket

             M = mass of earth

             r = distance between earth and rocket

So, as rocket takes off from earth and fly towards mars then the distance starts to increase between earth and rocket, and the gravitational pull between them starts to weaken. Then a point will reach when rocket will far from gravity of earth and could probably enter the gravity of Mars.

Learn more about gravitational law here:

 brainly.com/question/12101547

     #SPJ4

5 0
2 years ago
Other questions:
  • Two people must have the same speed and velocity if they are walking towards each other, they are walking away from each other,
    15·1 answer
  • Using evidence from the article, defend the concept that
    6·2 answers
  • In the steady state 1.2 ✕ 1018 electrons per second enter bulb 1. There are 6.3 ✕ 1028 mobile electrons per cubic meter in tungs
    11·1 answer
  • Velocity is the
    8·1 answer
  • A joule is equivalent to a
    8·1 answer
  • A meter stick with a mass of 0.155 kg is pivoted about one end so it can rotate without friction about a horizontal axis. The me
    5·1 answer
  • What is the momentum of a 0.5 kg ball which is thrown at 20 m/s?
    12·1 answer
  • Which one has greater potential energy? An 8 kg rock sitting on a 2.2 m cliff or a 6 kg rock sitting on a 3.2 m cliff.
    7·1 answer
  • Which statement uses power correctly? (1 point)
    12·1 answer
  • A descent vehicle landing on the moon has
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!