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Setler79 [48]
3 years ago
11

A car advertisement states that a certain car can accelerate from rest to 140 m/s in 7 seconds. Find the car’s average accelerat

ion.
Physics
1 answer:
4vir4ik [10]3 years ago
6 0

Answer:

<h2>20 m/s</h2>

Explanation:

Bc Accelerations formula is V/T (velocity over time).

with this you can plug in the velocity witch is just speed with direction over time witch looks like this 140 m/s / 7 s.

and when you calculate acceleration= 20 m/s

Plz give brainliest:-)

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Aliun [14]

Answer:

45

Explanation:

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7 0
3 years ago
PLEASE ANSWER
gtnhenbr [62]

Answer:

<em><u>A balance and a beaker of water!</u></em>

Explanation:

Krishne wants to measure the mass and volume of a key. The tools that are to be used are – a balance and a beaker of water.

Mass will be represent with the amount of matter that is in an object. This will be measured in terms of kilogram. The mass can easily be measured with balance.

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7 0
3 years ago
You throw a ball with a speed of 25.0 m/s at an angle of 40.0â—¦ above the horizontal directly toward a wall. The wall is 22.0 m
Alina [70]

The ball takes about 1.15 seconds to reach the wall

<h3>Further explanation</h3>

Acceleration is rate of change of velocity.

\large {\boxed {a = \frac{v - u}{t} } }

\large {\boxed {d = \frac{v + u}{2}~t } }

<em>a = acceleration ( m/s² )</em>

<em>v = final velocity ( m/s )</em>

<em>u = initial velocity ( m/s )</em>

<em>t = time taken ( s )</em>

<em>d = distance ( m )</em>

Let us now tackle the problem!

This problem is about Projectile Motion

<u>Given:</u>

initial speed = u = 25 m/s

angle of speed = θ = 40.0°

horizontal distance = x = 22.0 m

<u>Unknown:</u>

time taken by the ball = t = ?

<u>Solution:</u>

<em>We will use this following formula to find the time taken by the ball to reach the wall:</em>

x = u_x t

x = u \cos \theta ~t

22 = 25 \cos 40^o ~t

t = 22 \div ( 25 \cos 40^o )

t \approx 1.15 \texttt { seconds}

\texttt{ }

<h2>Conclusion :</h2>

The ball takes about 1.15 seconds to reach the wall

\texttt{ }

<h3>Learn more</h3>
  • Velocity of Runner : brainly.com/question/3813437
  • Kinetic Energy : brainly.com/question/692781
  • Acceleration : brainly.com/question/2283922
  • The Speed of Car : brainly.com/question/568302

<h3>Answer details</h3>

Grade: High School

Subject: Physics

Chapter: Kinematics

Keywords: Velocity , Driver , Car , Deceleration , Acceleration , Obstacle , Projectile , Motion , Horizontal , Vertical , Release , Point , Ball , Wall

7 0
3 years ago
Read 2 more answers
g a 240 V&lt;0 source source supplies a balance, three-phase load in a delta configuration. The line current is 3 A&lt;45. What
amid [387]
Schoolegfnfabgsag hvbhgddscgh
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Se coloca agua en un recipiente de aluminio y se pone a calentar en una estufa que le suministra 230 kj, lo cual hace que la tem
tensa zangetsu [6.8K]

Answer:

32 °C.

Explanation:

Hola.

En este caso, debemos entender que la relación entre el calor y la temperatura viene dada por:

Q=mCp\Delta T

De este modo, dado que estamos estudiando la misma sustancia (agua) con masa constante, la relación calor-temperatura es lineal y directamente proporcional, por tal razón, si se duplica el calor suministrado, la temperatura también será duplicada, de modo que:

\Delta T_{nuevo}=2*16\°C\\\\\Delta T_{nuevo}=32\°C

¡Saludos!

3 0
3 years ago
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