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
Andrej [43]
3 years ago
7

A person travels from New York to Washington at the rate of 45 km per hour and

Physics
1 answer:
mr_godi [17]3 years ago
8 0

Answer:

The average speed for the whole journey is 49.5 miles per hour.

Explanation:

Step 1 :

Here, both the ways, he covers the same distance.  Then, the formula to find average speed is

=  2xy / (x+y)

Step 2 :

x ----> Rate at which he travels from New York to Washington  

x  =  45

y ----> Rate at which he travels from New York to Washington  

y  =  55

Step 3 :

So, the average speed is

=  (2 ⋅ 45 ⋅ 55) / (45 + 55)

=  4950 / 100

=  49.5

You might be interested in
The diagram shows parts of a wave. A series of waves with an arrow passing through their centers. The highest point of one wave
Pachacha [2.7K]

Answer:

im not sure but i think its c

Explanation:

3 0
3 years ago
Read 2 more answers
It may seem dangerous to be in a car during a thunderstorm, but it's actually relatively safe. Since the car is essentially a me
balu736 [363]

Answer:

The charges from the thunderstorm flow through the conductive metal

of which the vehicle is made and distribute themselves on the outside surface of the vehicle

Explanation:

It is actually safer to stay inside a car during a thunderstorm rather than standing outside the car. The reason is this, thunder passes electrical charges through a conductor. The body of the vehicle is made of a metal which is a good conductor of electricity. The charges will redistribute themselves on the body of the vehicle (a metallic conductor of electricity) hence the occupants of the car are relatively safe.

The reasons described above makes those inside the vehicle relatively safe compared to a person standing outside.

7 0
3 years ago
Read 2 more answers
A horizontal line on a displacement-time graph means the object is
r-ruslan [8.4K]

Answer:

traveling further away

Explanation:

4 0
3 years ago
Which of the following activities belongs on the top of the physical activity for pyramid
jasenka [17]
Playing Vedio Games. :)
7 0
3 years ago
Two automobiles traveling at right angles to each other collide and stick together. Car A has a mass of 1200 kg and had a speed
sergij07 [2.7K]

Answer:

v_{B0}=15.73 m/s

Explanation:

We can use the conservation of momentum. The initial momentum is equal to the final momentum:

x-coordinate

p_{0x}=p_{fx}

m_{A}v_{A0}=(m_{A}+m_{B})v_{cx}  

m_{A}v_{A0}=(m_{A}+m_{B})v_{c}cos(40) (1)

y-coordinate

p_{0y}=p_{fy}

m_{B}v_{B0}=(m_{A}+m_{B})v_{cy}  

m_{B}v_{B0}=(m_{A}+m_{B})v_{c}sin(40) (2)

We can divide equations (2) and (1):

\frac{m_{B}v_{B0}}{m_{A}v_{A0}}=\frac{sin(40)}{cos(40)}

\frac{m_{B}v_{B0}}{m_{A}v_{A0}}=tan(40)

v_{B0}=\frac{m_{A}v_{A0}}{m_{B}}*tan(40)

v_{B0}=\frac{1200*25}{1600}*tan(40)

v_{B0}=15.73 m/s

I hope it helps you!

           

4 0
4 years ago
Read 2 more answers
Other questions:
  • Which object is least likely to allow light to pass through it?
    13·2 answers
  • if you have an isotope of the element carbon (C) that has the mass number of 14, what other information would help you determine
    12·1 answer
  • Cheryl has a mug that she says is made up of matter. Heather says that the hot chocolate inside the cup is made up of matter, to
    6·1 answer
  • T object]user: a ____ farm can be used to generate electricity
    7·1 answer
  • How can resistance be useful and where can they be useful?
    11·1 answer
  • Air expands adiabatically in a piston–cylinder assembly from an initial state where p1 = 100 lbf/in.2, v1 = 3.704 ft3/lb, and T1
    5·1 answer
  • What is the density of the liquid
    8·2 answers
  • HELP!!!!! FILL IN THE BLANKS
    13·1 answer
  • #1. What, roughly, is the percent uncertainty in
    11·1 answer
  • What is KiloWatt unit in simple words??<br> Explain.......
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!