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
Mumz [18]
3 years ago
10

A car starts from rest and accelerates along a straight line path in one minute it finally attains a velocity of 40 meters/secon

d what is the cars average acceleration
Physics
1 answer:
strojnjashka [21]3 years ago
6 0
|Average acceleration| = (change in speed) / (time for the change)

Change in speed = (speed at the end) minus (speed at the beginning)

                            =        (40 m/s)            -            ( 0 )

                            =   40 m/s .

|Average acceleration| =    (40 m/s)  /  (60 sec)  =  2/3  m/s² .
You might be interested in
A 1.5 kg ball is thrown upward at 10 m/s. What is its velocity when it is 2 m above the release point?
Anestetic [448]

Answer:

7.75m/s or 2\sqrt{15}m/s

Explanation:

m = 1.5kg

u= 10m/s

s = 2m

a = 10m/s^{2}

v = ?

acceleration due to gravity is negative when an object is going up because the force of gravity reduces the speed of the object

using the formula ;

v^{2} = u^{2} - 2as since the object is moving upwards (negative acceleration)

= 100 - 2(10)(2)

100 - 40

v^{2} = 60

v = \sqrt{60}

= 7.75m/s

5 0
3 years ago
Which change would cause the largest increase in a mountain climber’s gravitational potential energy?
nasty-shy [4]

Most likely climbing up the mountain

6 0
3 years ago
What is a mixture of rock and mineral fragments, organic matter, air, and water called?
Gekata [30.6K]
The answer should be soil
7 0
4 years ago
The center of a moon of mass m is a distance D from the center of a planet of mass M. At some distance x from the center of the
nataly862011 [7]

Answer with Explanation:

Let  rest mass m_0 at point P  at  distance x from center of the planet, along a line connecting the centers of planet and the moon.

Mass of moon=m

Distance between the center of moon and center of planet=D

Mass of planet=M

We are given that net force on an object will be zero

a.We have to derive an expression for x in terms of m, M and D.

We know that gravitational force=\frac{GmM}{r^2}

Distance of P from moon=D-x

F_m=Force applied on rest mass due to m

F_m=Force on rest mass due to mas M

F_M=F_m because net force is equal to 0.

F_m=F_M

\frac{Gm_0m}{(D-x)^2}=\frac{Gm_0M}{x^2}

\frac{m}{(D-x)^2}=\frac{M}{x^2}

\frac{x^2}{(D-x)^2}=\frac{M}{m}

\frac{x}{D-x}=\sqrt{\frac{M}{m}}

Let R=\sqrt{\frac{M}{m}}

Then, \frac{x}{D-x}=R

x=DR-xR

x+xR=DR

x(1+R)=DR

x=\frac{DR}{1+R}

b.We have to find the ratio R of the mass of the mass of the planet to the mass of the moon when x=\frac{2}{3}D

Net force is zero

F_m=F_M

\frac{Gm_0m}{(D-\frac{2}{3}D)^2}=\frac{Gm_0M}{\frac{4}{9}D^2}

\frac{m}{\frac{D^2}{9}}=\frac{9M}{4D^2}

\frac{M}{m}=4

Hence, the ratio R of the mass of the planet to the mass of the moon=4:1

8 0
4 years ago
How long do curling irons take to heat up?
adoni [48]
4-5 mins at max. Depends on the brand
5 0
3 years ago
Other questions:
  • A person in a kayak starts paddling, and it accelerates from 0 to 0.680 m/s in a distance of 0.428 m. If the combined mass of th
    6·1 answer
  • Slick Willy is in traffic court (again) contesting a $50.00 ticket for running a red light. “You see, your Honor, as I was appro
    8·1 answer
  • Which of the following statements about psychological constructs is true?
    10·1 answer
  • A spherical cavity is excised from the inside of the sphere. The cavity has radius a4 and is centered at position h⃗ , where |h⃗
    8·1 answer
  • Rama's weight is 40kg. She is carrying a load of 20 kg up to a height of 20 m . What work does she do?​
    10·1 answer
  • Let's assume raspberries are 10 wt% protein solids and the remainder water. When making jam, raspberries are crushed and mixed w
    10·1 answer
  • Please helppp:(((<br>Please a correct answer​
    12·1 answer
  • Why do yall like Biden
    11·2 answers
  • HELP PLS! :/
    7·1 answer
  • It takes 18 J of energy to move a 0.30 mC charge from one plate of a 15 mF capacitor to the other. How much charge is on each pl
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!