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
Reil [10]
3 years ago
7

A car accelerates from 30 m/s to 50 m/s in 2 seconds. Calculate the cars acceleration

Physics
1 answer:
masha68 [24]3 years ago
5 0

Answer:

applying 1st eq of motion vf=vi+at we have to find a=vf-vi/t here a=50-30/2=10 so we got a=10m/s²

You might be interested in
According to the graph of displacement vs. time, what is the object's displacement at time = 60 s?
krek1111 [17]

Answer:

The straight line that is obtained, intercept it on the y-axis and the value of displacement will obtained.

Explanation:

4 0
3 years ago
Read 2 more answers
3
kramer

Answer:

60.2 J

Explanation:

Efficiency is the ratio of work out to work in.

e = Wout / Win

0.86 = Wout / 70 J

Wout = 60.2 J

5 0
3 years ago
Read 2 more answers
What is power?
Blizzard [7]

Answer:

D

Explanation:

P=Work/Time

The rate at which work is done matches that.

6 0
3 years ago
We want to find how much charge is on the electrons in a nickel coin. Follow this method. A nickel coin has a mass of about 4.2
monitta

Answer:

The number of atoms is N = 4.37*10^{22} \ atoms

Explanation:

From the question we are told that

                 The mass of coin  is m_n = 4.2g

                   Number of atom in one mole = n =6.02*10^{23} \ atoms

                   Molar mass of nickel M = 57.8g

Now the relation to obtain the number of atom in  the  nickel coin is

                        N = \frac{Mass \ of Nickel\ coin}{Molar \ mass\ of nickel }  * No\ of\atoms \ in \ \ one\  mole\ of\ nickel

                           = \frac{4.2}{57.8}* 6.02*10^{23}

                           =4.37 *10^{22} atoms

                 

     

8 0
3 years ago
REALLY NEED HELP WITH THIS!!!
goldenfox [79]
I don't know if this is right, but inheritance?
7 0
3 years ago
Other questions:
  • A catapult’s lever holds a cannonball. The lever is attached to a tightly held rope. When the rope is released, the lever spring
    8·2 answers
  • Um relógio de ponteiros funciona durante um mês. Qual é, em N.C, o número de voltas, aproximadamente, que o ponteiro dos minutos
    15·1 answer
  • The amount of light a star gives off is called its.....
    5·1 answer
  • A 25 newton force applied on an object moves it 50 meters. The angle between the force and displacement is 40.0 degrees. What is
    15·2 answers
  • The critical angle for diamond (n-2.42) surrounded by air is approximately 24 35 48 66
    6·1 answer
  • Pam, with a mass of 40.4 kilograms, straps on a rocket pack while wearing her roller blades. The rocket supplies a constant forc
    8·1 answer
  • What clouds are best associated with thunderstorms?
    5·1 answer
  • How long did it take the shuttle shock to fall 12 meters
    5·1 answer
  • Which one of these is a compound
    11·1 answer
  • How do you think the COVID pandemic would have been different if more people understood how science works​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!