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
bogdanovich [222]
3 years ago
15

Your friend just challenged you to a race through an obstacle course. You know in order to beat him, you must run 30 meters with

in 60 seconds in a southern direction. What does your average velocity need to be to win the race?
.5 meters per second, south
15 meters per second, south
2 meters per second, south
90 meters per second, south
Physics
1 answer:
seropon [69]3 years ago
3 0

Answer:

Velocity = 0.5 m/s South (A)

Explanation:

You need to determine the average rate of velocity.  

The equation you will use is velocity = displacement/time

The displacement is 30m South.

The time is 60 seconds.

Plug into the equation  Velocity = 30m South/60 s

Velocity = 0.5 m/s South

You might be interested in
Assuming a vertical trajectory with no drag, derive the applicable form of the rocket equation for this application
VARVARA [1.3K]

Answer:

The vertical trajectory is governed by Ordinary Differential Equation.

Time derivatives of each state variables.

d(d)/dt = v, d(m)/dt = -d(m-fuel)/dt, d(v)/dt = F/m.

Where V is velocity positive upwards, t is time, m is mass, m-fuel is fuel mass, F is Total force, positive upwards.

Therefore,

F = -mg - D + T, If V is positive and

F = -mg + D - T, If T is negative.

D is drag and the questions gave it as zero.

Explanation:

The two sign cases in derivative equations above are required because F is defined positive up, so the drag D and thrust T can subtract or add to F depending in the sign of V . In contrast, the gravity force contribution mg is always negative. In general, F will be some function of time, and may also depend on the characteristics of the particular rocket. For example, the T component of F will become zero after all the fuel is expended, after which point the rocket will be ballistic, with only the gravity force and the aerodynamic drag force being p

8 0
3 years ago
At 7.0°c, the volume of a gas is 49 ml. at the same pressure, its volume is 74 ml at what temperature?
Rashid [163]
So i converted everything first; 
<span>7.0 C ---> 280 K </span>
<span>49 mL---> 0.049 L </span>
<span>74mL---> 0.074 L </span>
<span>THEN I tried setting it up by the combined law formula which is P1V1/T1=P2V2/T2 </span>
8 0
3 years ago
Oceanic crust is much denser than continental crust
Free_Kalibri [48]
Oceanic because it’s denser
8 0
2 years ago
Read 2 more answers
What is an odometer?
ra1l [238]

Answer:

It is a instrument used to measure the distance traveled by a vehicle.

Explanation:

This is what it looks like ↓

6 0
3 years ago
Read 2 more answers
Assume that a lightning bolt can be modeled as a long, straight line of current. If 16 C of charge passes by a point in 1.50 x 1
Reptile [31]

Answer:

B = 7.9012*10^{-5}T

Explanation:

To solve the problem, the concepts related to the magnetic field and the current produced in a lightning bolt are necessary.

The current is defined by the load due to time, that is to say

I= \frac{q}{t}

Where,

q= Charge

t = time

So the current can be expressed as:

I = \frac{16}{1.5*10^{-3}}

I = 10666.67A

Once the current is found it is now possible to find the magnetic field, as this is given by the equation,

B =\frac{\mu_0}{2\pi}\frac{I}{r}

Where,

\mu_0 =Permeability Constant

I= Current

r= radius

Replacing the values we have

B=\frac{4\pi*10^{-7}}{2\pi}(\frac{10666.67}{27})

B = 7.9012*10^{-5}T

7 0
3 years ago
Other questions:
  • Does any one know the answer
    10·1 answer
  • A clam of mass 0.12 kg dropped by a seagull takes 3.0 s to hit the ground. [Neglect friction.]
    5·1 answer
  • Two very small spheres are initially neutral and separated by a distance of 0.30 m. Suppose that 2.50 1013 electrons are removed
    9·1 answer
  • Составь словарный диктант из глаголов неопределённой формы которые есть в орфографическом словаре учебника рядом Перепишите слов
    6·1 answer
  • What is drag? In what situations might it act on the force of gravity?
    9·2 answers
  • During a medical condition screening lung capacity testing is a standard procedure. True of false
    13·1 answer
  • Calculate the velocity of a car that travels 581 kilometers notheast in 3.5 hours?
    11·1 answer
  • Please help me this is a test and it needs to be done in a few​
    11·2 answers
  • Determine the magnitude of the force for each direction. A. Add the forces that are applied in the same direction. B. Subtract f
    6·1 answer
  • HELP ME ASAP PLEASE!!Which natural phenomenon can trigger a landslide?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!