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andrew-mc [135]

3 years ago

8

guys be careful noblepenguin is getting people banned he took all my brainliest he has to be stopped has a bot a be careful Kati

e as well

2 answers:

Julli [10]3 years ago

7 0

Answer:

K thanks for letting everyone know!

Explanation:

Veseljchak [2.6K]3 years ago

3 0

Thanks for letting us know

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If the speed of a car is increased by 80%, by what factor will its minimum braking distance be increased, assuming all else is t

Vikki [24]

Answer:

$KE_2=3.24 \times KE_1$

Explanation:

given,

Speed of car = v

new speed of car v'= 1.8 v

Kinetic energy of the car

$KE_1 =\dfrac{1}{2}mv^2$

new Kinetic energy of energy

$KE_2 =\dfrac{1}{2}mv'^2$

$KE_2=\dfrac{1}{2}m(1.8v)^2$

$KE_2=3.24 \times \dfrac{1}{2}mv^2$

$KE_2=3.24 \times KE_1$

hence, the kinetic energy is increased by the factor of 3.24.

6 0

3 years ago

A group of animals have short, narrow legs that are partly webbed. In which environment do these animals MOST LIKELY live? A) de

Burka [1]

I'd say it's answer D) rainforests

7 0

3 years ago

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if a ball is rolling at a velocity of 1.5 m/sec and has the momentum of 10.0 kg m/sec, what is the mass of the ball?

PolarNik [594]

Okay. There is a simple formula to go with this where:

p = mv

P: Momentum.
M: Mass.
V: Velocity

Sub the numbers in and solve for M.

10.0 = m(1.5)
10.0/1.5 = m
6.67 kg = m

Therefore the mass of the ball is 6.67kg.

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3 years ago

Order, from smallest to largest, the following objects:

Makovka662 [10]

cluster of galaxies 1

THE MILky way 2

earth 3

most moons 4

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4 0

3 years ago

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A 0.25 kg steel ball is tied to the end of a string and then whirled in a vertical circle at a constant speed v. The length of t

TiliK225 [7]

Answer:

Explanation:

Let the tension in the string be T . At the top of the circle , total force acting on them = T + mg . This will provide centripetal force

T + mg = m v² / r

4 + .25 x 9.8 = .25 x v² / .62

6.45 = .25 v² / .62

v² = 16

v = 4 m /s .

7 0

3 years ago