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
nataly862011 [7]
2 years ago
11

If you ran 15 km/h for 20 min, how much distance would you cover?

Physics
1 answer:
nikitadnepr [17]2 years ago
4 0
Since we have 15 kilometers per hour, and we're looking for 20 minutes, let's set up proportions.
20/60 minutes = x/15
20/60 = 1/3, so let's leave that simplified.
1/3 = x/15
Look at the denominators, 3 to 15 is a factor of 5, so multiply the numerator by 5.
1 • 5 = 5, so you will cover 5 kilometers in 20 minutes.

I hope this helps!
You might be interested in
Astronauts are trained for take-off in a high-speed centrifuge of 4.7 m radius that spins in the horizontal plane.
Leokris [45]

Answer:

a) 1.94 \frac{rad}{s}

b) 9.12\frac{m}{s}

c) Towards the center of the centrifuge

Explanation:

a)

Becuse the centrifuge rotates in circular motion, there's an angular acceleration tha simulates high gravity accelerations

a_{rad}=\omega r^{2}

with r the radius and ω the amgular velocity, in or case a_rad=3.5g so:

3.5g=\omega r^{2} and g=9.8\frac{m}{s^{2}}

solving for ω:

\omega=\frac{3.5g}{r^2}=\frac{3.5*9.8}{4.2^2}

\omega = 1.94 \frac{rad}{s}

b) Linear speed (v) and angular speed are related by:

v=\omega r =(1.94)(4.7)

v= 9.12\frac{m}{s}

c) The apparent weigth is pointing towards the center of the circle, becuse angular acceleration is pointing in that direction.

8 0
2 years ago
ACUTE INFECTION plz help worth 70 pt plz help !!!!! Also brainlest
Paraphin [41]

Answer:

Simple awnser Do it yourself I really would help but I have no clue! Sorry

Explanation:

3 0
3 years ago
A projectile is shot from the edge of a cliff above the ground level with initial velocity of at an angle with the horizontal. (
Xelga [282]

Answer:

t = √2y/g

Explanation:

This is a projectile launch exercise

a) The vertical velocity in the initial instants (v_{oy} = 0) zero, so let's use the equation

     y =v_{oy} t -1/2 g t²

     y= - ½ g t²

     t = √2y/g

b) Let's use this time and the horizontal displacement equation, because the constant horizontal velocity

     x = vox t

     x = v₀ₓ √2y/g

c) Speeds before touching the ground

     vₓ = vox = constant

     v_{y} = v_{oy} - gt

     v_{y} = 0 - g √2y/g

    v_{y}  = - √2gy

    tan θ = Vy / vx

    θ = tan⁻¹ (vy / vx)

    θ = tan⁻¹ (√2gy / vox)

d) The projectile is higher than the cliff because it is a horizontal launch

6 0
3 years ago
Suspend a heavy weight by two pieces of rope. Tension is greatest when the ropes
bija089 [108]
Assuming that the angle is the same for both ropes, then D. is the answer.  You have to consider also if the ropes are close together or far apart and if the force to move the object is in line with the ropes or perpendicular to them.
<span />
3 0
3 years ago
A train increase its speed steadily from 10ms to 20ms in 1 minutes
maxonik [38]

Answer:

Explanation:  nigerian what

8 0
2 years ago
Other questions:
  • An iron nail is made up of particles. What is true about the particles?
    6·2 answers
  • The height of a transverse wave from the midpoint to the crest or trough is the .
    5·2 answers
  • Water absorbs and releases large amount of energy before changing temperature, a characteristic known as
    10·1 answer
  • Why is gasoline so flammable
    8·2 answers
  • Explain how Rutherfords' gold foil experiment explains how this experiment confirms the nuclear model of the atom and the idea t
    15·1 answer
  • The distance from the peak to a peak of a successive wave.
    6·1 answer
  • Here are the results of the study:
    11·1 answer
  • 10
    5·1 answer
  • An observer stands 150 meters from a fireworks display rocket, which is fired directly upward. When the rocket reaches a height
    14·1 answer
  • Which can be observed both on Earth and in an accelerating ship in space that is free from the effect of any gravitational field
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!