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
olchik [2.2K]
3 years ago
12

A car accelerates from rest to 12 m/s in 4 seconds. What is its acceleration?

Physics
1 answer:
nikitadnepr [17]3 years ago
7 0

Answer:

<h3>The answer is 3.0 m/s²</h3>

Explanation:

The acceleration of an object given it's velocity and time taken can be found by using the formula

a =  \frac{v}{t}  \\

where

a is the acceleration

v is the velocity

t is the time

From the question

v = 12 m/s

t = 4 s

We have

a =  \frac{12}{4}  \\

We have the final answer as

<h3>3.0 m/s²</h3>

Hope this helps you

You might be interested in
At high noon, the sun delivers 1150 w to each square meter of a blacktop road. if the hot asphalt loses energy only by radiation
Pie
Stephen`s Law:
P = (Sigma) · A · e · T^4
P in = P out
e = 1 for blacktop;
1150 W = (Sigma) · T^4
(Sigma) = 5.669 · 10 ^(-8) W/m²K^4
T^4 = 1150 : ( 5.669 · 10^(-8) )
T^4 = 202.875 · 10^8
T =  \sqrt[4]{202.857 * 10 ^{8} }
T = 3.774 · 10² = 377.4 K
Answer: Equilibrium temperature is 377.4 K. 
3 0
3 years ago
Needing help with this please
Gemiola [76]

Answer:

So A we cant sadly do because we cant draw. B is going to be kinetic. Thats because static friction means it stays in one place, for kinetic it means moving. So it will be 0.05 as the coefficient of the friction. Sadly, I cannot calculate C. You will have to use trigonemetry but I cannot fit that big an explanation.

Answer to A: the free body diagram would be the ski things inclined with gravity, friction, and  air resistance. I except you know which directions

Answer to B: Kinetic friction is the answer.

Answer to C: Find on own, I cannot write super big explanations - use trigonometry.

6 0
3 years ago
A MEMS-based accelerometer has a mass of m = 2 grams, an equivalent spring constant of k = 5 N/m, and an equivalent damping coef
pychu [463]

Answer:

The natural frequency = 50 rad/s = 7.96 Hz

Damping ratio = 0.5

Explanation:

The natural frequency is calculated in this manner

w = √(k/m)

k = spring constant = 5 N/m

m = mass = 2 g = 0.002 kg

w = √(5/0.002) = 50 rad/s

w = 2πf

50 = 2πf

f = 50/(2π) = 7.96 Hz

Damping ratio = c/[2√(mk)] = 0.1/(2 × √(5 × 0.002)) = 0.5

5 0
3 years ago
What did newton's law of universal gravitation tell us about how gravity works?
vazorg [7]
The force of gravity form the Sun will be stronger on a n object with more mass
6 0
3 years ago
The _____________ variable is observed, measured, and affected by the independent variable.​
Katen [24]
The dependent variable
6 0
3 years ago
Read 2 more answers
Other questions:
  • Compute the resistance of a hardened copper rod 2 meters long and 8 mm in diameter if resistivity of the material is 1.756 x 10^
    13·1 answer
  • What is the net force acting on a 2kg obgect that accelerates from rest at a rate of 5m/s/s/?
    5·1 answer
  • The second floor of a house is 6m above street level. How much work is reguired to lift a 300 kg refrigerator to the second stor
    13·1 answer
  • An object at 20∘c absorbs 25.0 j of heat. what is the change in entropy δs of the object?
    13·2 answers
  • Which of the following are NOT two of the best ways to StaySafe around electricity?
    6·1 answer
  • A ball is dropped from rest at point O . It passes a window with height 3.8 m in time interval tAB = 0.02 s.Identify the correct
    7·1 answer
  • A car with a mass of 860 kg sits at the top of a 32 meter high hill. Describe the transformations between potential and kinetic
    11·1 answer
  • Microwelds are formed where
    8·2 answers
  • It is impossible to destroy __________.
    11·2 answers
  • What is the potential energy of a 32 kg child sitting on the floor? Explain.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!