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
Liono4ka [1.6K]
4 years ago
8

How far does a runner travel if they maintain a speed of 9.5 m/s for 140s?​

Physics
1 answer:
Yuki888 [10]4 years ago
5 0
Bruh just multiply 9.5 by 140 because if he runs for 140 seconds and runs 9.5 meters per second then he runs 9 meters per second
You might be interested in
I NEED HELP please answer it
Kaylis [27]
I did chocolate
1- 1:02
2-47 secs
3- 17 secs
Hope I helped ;)
4 0
3 years ago
Calculate the gravitational force on the washers using the formula F = ma where a = 10 m/s2 and m is the mass of the washers. Us
Radda [10]

0.049

0.098

0.147

0.196

6 0
4 years ago
Read 2 more answers
A hockey puck is sliding across a frozen pond with an initial speed of 9.5 m/s. It comes to rest after sliding a distance of 37.
Bond [772]

Answer:

<h3>The coefficient of kinetic friction between the puck and the ice is \mu _{k} = 0.12</h3>

Explanation:

Given :

Initial speed  v_{o} = 9.5 \frac{m}{s}

Displacement x = 37.4 m

From the kinematics equation,

  v^{2} - v^{2} _{o}  = 2ax

Where v^{2}   = final velocity, in our example it is zero (v =0), a = acceleration.

   a =- \frac{90.25}{ 2 \times 37.4}

   a =- 1.21 \frac{m}{s^{2} }

From the formula of friction,

  F =- \mu _{k } N

Minus sign represent friction is oppose the motion

Where N = mg ( normal reaction force )

 ma = -\mu _{k}  m g                                                  ( ∵ g = 9.8 \frac{m}{s^{2} } )

So coefficient of friction,

 \mu_{k} = \frac{1.21}{9.8}

 \mu_{k} = 0.12

Therefore, the coefficient of kinetic friction between the puck and the ice is  \mu _{k} = 0.12 .

4 0
3 years ago
Two long parallel wires separated by 4.0 mm each carry a current of 24 A. These two currents are in the same direction. What is
lesya [120]

Answer:

Explanation:

Magnetic field at a a point R distance away

B = μ₀ / 4π X 2I / R where I is current

Magnetic field due to one current

=  10⁻⁷ x 2 x 24 / 1 x 10⁻³

48 x 10⁻⁴ T

Magnetic field due to other current

=  10⁻⁷ x 2 x 24 / 3x 10⁻³

16 x 10⁻⁴ T

Total magnetic field , as they act in opposite direction, is

= (48 - 16 ) x 10⁻⁴

32 x 10⁻⁴ T .

5 0
3 years ago
Calculate the time of fight for a horizontally launched projectile from a height of 20m above the ground with an initial velocit
Hoochie [10]

Answer:

0.5sec

Explanation:

Parameters

Height(H) =20m

Initial velocity(u) = 5m/s

Acceleration due to gravity(g) =10m/s^2

Method one

Using the second law of motion

H=ut-1/2gt^2

20=5t-1/2×10×t^2

20=5t-5t^2

dh/dt = 5-10t

where any constant is zero therefore the 20 is zero

5-10t=0

Collect like terms

-10t= -5

t=1/2 = 0.5sec

2nd method

Parameters

Height(H) =20m

Initial velocity(u) = 5m/s

Acceleration due to gravity(g) =10m/s^2

Using the time taken formula

t=u/g

t=5/10

t=0.5sec

4 0
3 years ago
Other questions:
  • What is the longest wavelength of radiation with enough energy to break carbon-carbon bonds?
    9·1 answer
  • imagine that you have a rectangular swimming pool, but you have no idea how deep it is. you know that the pool has a volume of 2
    13·1 answer
  • What is the outermost layer of a kidney?
    15·2 answers
  • Consider a large truck carrying a heavy load, such as steel beams. A significant hazard for the driver is that the load may slid
    9·1 answer
  • A common design for a spotlight uses a lens and a mirror, combined with a gas-discharge lamp, to project a powerful parallel bea
    9·1 answer
  • The more force you put on a material, the more it .......?
    10·2 answers
  • Wood ducks build their nests in holes in trees near lakes. If some of the trees were removed from around the lake, how would the
    6·1 answer
  • In a series circuit of two resistors, the resistors have the same __________; in a parallel circuit of two resistors, the resist
    9·1 answer
  • During a certain period of time, the speedometer of a car reads a constant
    11·1 answer
  • In an atom is the number of protons greater, less than or equal to the number of electrons?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!