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
Usimov [2.4K]
3 years ago
10

John is riding the bus to the next samuell football game. The bus is traveling to the right at 20 m/s and Jon is walking towards

the back (left) of the bus at 5 m/s. What is Jon’s relative velocity to a stationary observer?
Physics
1 answer:
Elenna [48]3 years ago
4 0

Answer:

Vrel_jon's = 15 [m/s] to the right

Explanation:

Relative velocity is defined as the relative motion between two bodies, taking into account the directions of motion.

Relative velocity is defined as the relative motion between two bodies, taking into account the directions of motion. The relative velocity is defined as the algebraic sum of the velocities, if the movements are opposite the vectors are subtracted, as will be done below.

Vrel = 20 - 5 = 15 [m/s]

A person watching Jon sees him moving to the right at a speed of 15 [m/s]

You might be interested in
A fox is 7 meters from the base of a tree that is 15 m tall. A nest of owls is at the top of the tree. One of the owlets tosses
mamaluj [8]
Refer to the diagram shown below.

In this analysis, wind resistance is ignored, and g = 9.8 m/s².

The meat falls with zero vertical velocity, therefore the time, t, before the meat hits the ground is
\frac{1}{2}*(9.8 \, \frac{m}{s^{2}})*(t \, s)^{2} = (15 \, m) \\ t= \sqrt{ \frac{15}{4.9} }= 1.75 \, s

If the fox catches the meat before it hits the ground, then the fox should travel a horizontal distance d in the same time that the meat travels a horizontal distance (7 -d).
The meat travels a distance of 
7 - d = (1.2 m/s)*(1.75 s) = 2.1 m
or
d = 4.9 m

Let v =  velocity of the fox when it catches the meat.
If the acceleration of the fox is a m/s², then
v = 1.75a
Also,
d= \frac{1}{2} *(a \,  \frac{m}{s^{2}} )*(1.75 \, s)^{2} =  \frac{1}{2}( \frac{v}{1.75})^{2}*(1.75^{2})  \\ 4.9 = 0.875v^{2} \\ v^{2} = 5.6 \\ v = 2.366 \, m/s

Answer:  2.37 m/s  (nearest hundredth)



5 0
3 years ago
What is the speed of a light ray (f 5.09 x10 14 Hz) in corn oil?
oee [108]

Answer:

it a

Explanation:

5 0
3 years ago
Read 2 more answers
Why do we use the name electromagnetism to describe the force of an
ElenaW [278]

Answer:

magnet, gravity

Explanation:

5 0
3 years ago
The velocity of particle varies with time as equation
Advocard [28]

Velocity of a particle varies with its displacement as v = ( √(9 ... Velocity of a particle varies with its displacement as v = ( √(9 - x^2) ) m/sFind the magnitude of maximum acceleration of the particle.

<h2 />
3 0
3 years ago
Read 2 more answers
Sonar in pipeline inspections
butalik [34]
Makes no sense get a better question
4 0
4 years ago
Other questions:
  • A dolphin emits ultrasound at 100kHz and uses the timing of reflections to determine the position of objects in the water. What
    5·1 answer
  • Mary slides down a snow-covered hill on a large piece of cardboard and then slides across a frozen pond at a constant velocity o
    6·1 answer
  • One molecule of glucose makes 30 molecules of atp. how many molecules of glucose are needed to make 300 molecules of atp in aero
    12·2 answers
  • The function x = (5.2 m) cos[(5πrad/s)t + π/5 rad] gives the simple harmonic motion of a body. At t = 5.3 s, what are the (a) di
    14·1 answer
  • Image that Grade 7 students are looking at a spherical ornament that has mirror-like surface. The students exclaim how strange t
    6·1 answer
  • Which statement about friction in a system is true?(1 point)
    7·1 answer
  • Una cantidad de aire se lleva del estado a al estado b siguiendo una trayectoria recta en una grafica PV como es mostrado en la
    10·1 answer
  • Calculate the magnitude of the acceleration of Io due to the gravitational force exerted by Jupiter. [Show all work, including t
    7·1 answer
  • A learner has a mixture of sand and water. The best method to separate this solution would be ?
    14·2 answers
  • This is being graded.<br><br><br>Great answers only<br><br><br>​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!