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1 year ago

In nineteenth century, physical science was divided into discipline. .

Physics

2 answers:

dem82 [27]1 year ago

8 0

Answer:

Here! Try this Website!: www.britannica.com › science › physical-science physical science | Definition, History, & Topics | Britannica. So you will learn a lot more about science, history, and topics about it!

Nady [450]1 year ago

7 0

Answer:i have no idea

Explanation:

You might be interested in

Bumper car A (281 kg) moving

solmaris [256]

use consevation of linear momentum

m1v1+m2v2=(M1+M2)V3
281(2.82)+209(-1.72)=(209+281)V2
792.42-359.48=490v3
432.9=490v3
V3=0.88m/s

4 0

1 year ago

How can a driver steer a car traveling at constant speed so that the magnitude of the acceleration remains constant. (Assume tha

ratelena [41]

<h2>Circular path i.e 1</h2>

Explanation:

If the driver steer into circular path , the acceleration of car will be

acceleration = velocity²/radius of circle

Because the velocity and radius of circle are both constant at all points . Thus the acceleration will also remain constant .

In case 3 and 4 , the radius of path changes . Because velocity is constant . Therefore the acceleration will not remain constant

3 0

2 years ago

The car's motion can be divided into three different stages: its motion before the driver realizes he's late, its motion after t

jolli1 [7]

Answer:

B, C, D are valid assumptions

Explanation:

In each stage the acceleration of the car varies because the velocity of car varies in each stage. At first, the acceleration of the car is moving slowly.

Then, driver realizes that he is late so the acceleration of the car increases he hits the gas.

Finally, the acceleration decreases when he sees the police car.

In the first state when driver do not know, that he is late, he will drive with a constant velocity as any one does.

When the driver hits the gas and he does not know about the police vehicle, even then he may drive with constant velocity or he may accelerate the car due to fear of being caught.

In the last part of motion when driver see the police car, even than he may accelerate the car, but acceleration will be constant throughout the motion is not possible, or even than he may continue with constant velocity.

Hence, there are only three assumptions are valid.

B. During each of the three different stages of its motion, the car is moving with constant velocity.

C . The highway is straight.

D. The highway is level.

Note that the rate of change of speed is equal to the acceleration. The acceleration is constant if change in velocity of particle is equal in equal interval of time.

8 0

3 years ago

A 21.0 kg shopping cart is moving with a velocity of 4.0 m / s. It strikes a 7.0 kg box that is initially at rest. They stick to

jonny [76]

Explanation:

Given that,

Mass of the shopping cart, $m_s=21\ kg$

Initial speed of the shopping cart, $u_s=4\ m/s$

Mass of the box, $m_b=7\ kg$

Initial speed of the box, $u_b=0$ (at rest)

They stick together and continue moving at a new velocity. It is a case of inelastic collision.

(a) The momentum of the shopping cart before the collision is given by :

$p_s=m_s\times u_s\\\\p_s=21\times 4\\\\p_s=84\ kg-m/s$

(b) The momentum of the box before the collision is given by :

$p_b=m_b\times u_b\\\\p_b=7\times 0\\\\p_b=0$

(c) The velocity of the combined shopping cart/box wreckage after the collision is given by using the conservation of momentum as :

$m_su_s+m_bu_b=(m_s+m_b)V\\\\V=\dfrac{m_su_s+m_bu_b}{(m_s+m_b)}\\\\V=\dfrac{21\times 4+0}{(21+7)}\\\\V=3\ m/s$

Hence, this is the required solution.

8 0

2 years ago

A football player kicks a 0.94 kg football with a force of 2.4 N. Calculate the acceleration of the football as the player kicks

Anon25 [30]

Hello, I hope this helps :)
So the equation to figure these kinds of questions is F=MA
F refers to force, which in this situation F would be 2.4
M refers to mass, mass would be 0.94
A refers to acceleration, which we are trying to figure out
So if we put in the information we know into the equation, it is now 2.4=0.94*A
So with that equation we can figure that 2.4 divided by 0.94 equals A
So 2.4/0.94= 2.553191489362 :'D
Don't worry, the rounded and correct answer is 2.6
Have a nice day =)

7 0

2 years ago

Read 2 more answers

In nineteenth century, physical science was divided into discipline. . ​

In nineteenth century, physical science was divided into discipline. .