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Lorico [155]
3 years ago
9

Can anyone please answer both of these questions?

Physics
1 answer:
Anestetic [448]3 years ago
6 0
A. YES. As speed is a scalar quantity, direction of movement doesn’t affect it.

B. Because the friction force due to air acting on the upper part of body of the person who is traveling on the roof of the running bus try to turn over which is dangerous for passengers while the lower portion remain at rest.
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Which properties of plastics allow them to be solutions to many complex problems in the world? Check all that apply. A.chemicall
grigory [225]

the answers are A, B, C, E  HOPED THIS HELPED

3 0
3 years ago
Read 2 more answers
Help please :pensive:
tino4ka555 [31]

Answer:

0m/s²

Explanation:

Given parameters:

Initial velocity of the boat = 8m/s

Final velocity  = 8m/s

Time taken  = 4s

Unknown:

Acceleration of the boat = ?

Solution:

Acceleration is the rate of change of velocity with time.

It is mathematically expressed as;

        A = \frac{v - u}{t}

A is the acceleration

v is the final velocity

u is the initial velocity

t is the time taken

    Insert the parameters and solve;

  A = \frac{8-8}{4}   = 0m/s²

6 0
3 years ago
In order to attain orbit around earth, the ATLAS-V rocket must accelerate up to a
IrinaK [193]
A) average acceleration = final velocity - initial velocity / time

= 7700 - 0 / 11

= 700ms^-2


B) force = mass x acceleration

= (3.05 x 105) x 700

= 320.25 x 700

= 224,175N
7 0
3 years ago
Air bags are designed to deploy in 10 ms. Given that the air bags expand 20 cm as they deploy, estimate the acceleration of the
joja [24]

As it is given that the air bag deploy in time

t = 10 ms = 0.010 s

total distance moved by the front face of the bag

d = 20 cm = 0.20 m

Now we will use kinematics to find the acceleration

d = v_i*t + \frac{1}{2}at^2

0.20 = 0 + \frac{1}{2}a*0.010^2

0.20 = 5 * 10^{-5}* a

a = 4000 m/s^2

now as we know that

g = 10 m/s^2

so we have

a = 400g

so the acceleration is 400g for the front surface of balloon

3 0
3 years ago
Pls help i’ll give brainliest if you give a correct answer!!
enot [183]

Answer:

the second one

Explanation:

4 0
3 years ago
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