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3 years ago

A car with four passengers will have a shorter braking distance than a car with one braking distance. True or false. Why?

Physics

1 answer:

Valentin [98]3 years ago

6 0

<u>Answer:</u>

The given statement is a True statement

<u>Explanation:</u>

All cars and trucks have load capacities marked on the jamb of the driver's door, as well as the owner's manual. This is very significant for braking distance.

A heavier object will require much more braking force and distance to stop, due to New ton's law of motion. “ An object in motion will tend to stay in motion “ .A heavy object will remain in motion longer and require much more force to stop. Four wheel disc brakes are great compared to front disc and rear drum configuration, in dissipating heat, and stopping more efficiently.

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17V:=192)

BartSMP [9]

Answer:

THAT loooks hard123 -

Explanation:

v hard..... 1234=123

vhemistryyyy

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3 years ago

Oak trees make many acorns that can become new oak trees what is this an example of

Kisachek [45]

Reproduction! hope this helps u.

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3 years ago

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a 800 kg roller coaster cart is accelerated by a constant net force over a distance of 10 meters, as shown in the graph below: d

devlian [24]

Answer:

vf = 22.36[m/s]

Explanation:

First we must understand the data given in the problem:

m = mass = 800 [kg]

F = force = 20000[N]

dx = displacement = 10[m]

From newton's second we know that the sum of forces must be equal to the product of mass by acceleration.

$F = m*a\\20000 = 800*a\\a = 20000/800\\a = 25 [m/s^2]$

With the calculated acceleration, we can use the kinematics equations.

$v_{f} ^{2} =v_{o} ^{2}+2*a*dx\\ v_{o} = initial velocity = 0\\a = acceleration = 25[m/s^2]\\dx= displacement = 10[m]\\$

The key to using this equation is to clarify that the initial velocity is zero since the body is at rest, otherwise the initial velocity would be an initial data.

$v_{f} =\sqrt{2*25*10} \\v_{f} =22.36[m/s]$

Another way of solving this problem is by means of the definition of work and kinetic energy, where work is defined as the product of the force by the distance.

W =F*d

W = 20000*10

W = 200000[J]

Kinetic energy is equal to work, therefore the value calculated above is equal to:

$E_{k}=W =0.5*m*v_{f}^{2} \\200000=0.5*800*v_{f}^{2}\\v_{f}=\sqrt{\frac{200000}{0.5*800} } \\v_{f}=22.36[m/s]$

7 0

3 years ago

Read 2 more answers

The Doppler effect is used by weather forecasters to measure what

BigorU [14]

The Doppler effect helps aid in forecasting the velocity of objects.
This could include precipitation in the atmosphere!

Thank you for using Brainly, 170103dhs!

4 0

4 years ago

Take the north direction as the positive y direction and east as positive x. The origin is still where the student starts biking

gogolik [260]

Answer:

d = ( -0.3 , 0.7 ) miles

Explanation:

The complete question is as follows:

" Take the north direction as the positive y direction and east as positive x. The origin is still where the student starts biking. Let d⃗ N be the displacement vector corresponding to the first leg of the student's trip. Express d⃗ N in component form.

Express your answer as two numbers separated by a comma (e.g., 1.0,2.0). By convention, the x component is written first.

A student bikes to school by traveling first dN = 0.800 miles north, then dW = 0.300 miles west, and finally dS = 0.100 miles south. "

Solution:

- The displacement vector d N is vector sum of all journeys. We will express +x as +i and +y as +j. Then displacement vector is given by:

d = dN + dW + dS

d = 0.8 j - 0.3 i - 0.1 j

d = - 0.3 i + 0.7 j

- The displacement vector d in component form is d = ( -0.3 , 0.7 ) miles

5 0

3 years ago