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A ride-sharing car moving along a straight section of road starts from rest, accelerating at 2.00 m/s2 until it reaches a speed

fgiga [73]

Answer:

Explanation:

Time taken to accelerate to 28 m /s

= 28 / 2 = 14 s

a ) Total length of time in motion

= 14 + 41 + 5

= 60 s .

b )

Distance covered while accelerating

s = ut + 1/2 at²

= 0 + .5 x 2 x 14²

= 196 m .

Distance covered while moving in uniform motion

= 28 x 41

= 1148 m

distance covered while decelerating

v = u - at

0 = 28 - a x 5

a = 5.6 m / s²

v² = u² - 2 a s

0 = 28² - 2 x 5.6 x s

s = 28² / 2 x 5.6

= 70 m .

Total distance covered

= 196 + 1148 + 70

= 1414 m

total time taken = 60 s

average velocity

= 1414 / 60

= 23.56 m /s .

8 0

4 years ago

Define what is boyleâs law?

lawyer [7]

Answer:

Volume of given mass of gas is inversely proportional to pressure of gas

Explanation:

Boyle's law: It states that the volume of given mass of gas is inversely proportional to the pressure of gas at constant temperature.

Mathematical representation:

Suppose, a gas of mass m

T=Constant temperature

V=Volume of gas

P=Pressure of gas

Then, $V\propto\frac{1}{P}$

8 0

4 years ago

For your senior project, you would like to build a cyclotron that will accelerate protons to 10% of the speed of light. The larg

jeyben [28]

Answer:

<h2>Magnetic field strength in that region is 1.2 T</h2>

Explanation:

As we know by the formula of radius of charge moving in external field is given as

$R = \frac{mv}{qB}$

so we will have

$R = 25 cm$

$m = 1.6 \times 10^{-27} kg$

$q = 1.6 \times 10^{-19} C$

$v = 0.10 \times 3 \times 10^8 m/s$

now we have

$0.25 = \frac{(1.6 \times 10^{-27})(3\times 10^7)}{(1.6 \times 10^{-19})B}$

now we have

$B = 1.2 T$

8 0

3 years ago

What is photosynthesis

Viktor [21]

Answer:

photosynthesis is the process by which plant prepares food using carbondioxide and water in the presence of sunlight

8 0

3 years ago

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ball a has half the mass and eight times the kinetic energy of ball b. what is the speed ratio vava / vbvb ?

d1i1m1o1n [39]

Ball b has eight times more kinetic energy than ball a, which has half its mass. The speed ratio is 4.

<h3>What exactly does kinetic energy mean?</h3>

Force must be applied to object in order to accelerate. To apply a force, we must work hard. Because energy has been transferred to the object, it will be moving at a new, constant speed once the operation is finished.

Given,

Two balls a and b

and the mass of ball an is half that of ball b..

Kinetic energy of ball a is eight times kinetic energy of ball b.

mₐ = $\frac{1}{2} m_{b}$

KEₐ = 8 KE $_{b}$

Kinetic energy is measured by,

KE = 1/2 mv²

KE ratios for both balls a and b are calculated,

∴ $\frac{KE_{a} }{KE_{b} }$ = $\frac{1/2 m_{a} v_{a}^{2} }{1/2 m_{b} v_{b} ^{2} }$

$\frac{8 KE_{b}}{KE_{b} }$ = $\frac{1/2 (1/2m_{b}) v_{a}^{2} }{1/2 m_{b} v_{b} ^{2} }$

16 = $\frac{v_{a} ^{2} }{v_{b} ^{2} }$

$\frac{v_{a} }{v_{b} }$ = 4/1

To know more about kinetic energy, visit:

brainly.com/question/2302596

#SPJ4

4 0

1 year ago

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