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baherus [9]
3 years ago
10

The minimum stopping distance for a car traveling at a speed of 30 m/s is 60 m, including the distance traveled during the drive

r's reaction time of 0.50 s . What is the minimum stopping distance for the same car traveling at a speed of 50
Physics
1 answer:
makkiz [27]3 years ago
7 0

Answer:

150 m

Explanation:

Distance traveled during reaction time = .5 x 30 = 15 m

Actual distance during which there was deceleration = 60 - 15 = 45 m .

force x displacement = kinetic energy

F x s = 1/2 m v² ;

F x 45 = 1/2 m 30² = 450 m ----( 1 )

for second case

Fx S = 1/2 m 50² = 1250 m --------( 2 )

Dividing( 1 )and ( 2 )

S/45 = 1250 /450 = 125 / 45

S = 125 m

Add distance traveled in reaction time in second case = 50 x .5 = 25 m

total distance required = 25 + 125 = 150 m

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At the circus, the Human Cannonball is
svlad2 [7]

The correct answer is  1.4285714.

In physics, velocity is characterised as a vector measurement of the motion's direction and speed. To be more precise, the rate of change in an object's position relative to a frame of reference and time is another way to describe velocity. The definition of velocity simply states the rate of motion of an object in a specific direction. It determines how quickly or slowly something is going.

Velocity = distance/ time  

Thus time = distance/velocity

Here velocity = 350m/s

diatnce = 500 m

time = 500/350

time = 1.42857142857

t= 200m /350m/s  = 1.4285714

To learn more about velocity refer the link:

brainly.com/question/18084516

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6 0
1 year ago
A closed container initially holds 50 monatomic Aparticles that have a combined energy of 480 units. After 100 monatomic B parti
Molodets [167]

Answer:

"8 units" is the appropriate answer.

Explanation:

According to the question,

Throughout equilibrium all particles are of equivalent intensity, and as such the integrated platform's total energy has been uniformly divided across all individuals.

Now,

The total energy will be:

= 480+720

= 1200 \ units

The total number of particles will be:

= 50+100

= 150

hence,

Energy of each A particle or each B particle will be:

= \frac{1200}{150}

= 8 \ units

5 0
3 years ago
1. An object (m = 500 g) with an initial speed of 0.2 m/s collides with another object (m = 1.5 kg) which was at rest before the
Anettt [7]

Answer:

Explanation:

1 )

We shall apply conservation of momentum law to solve the problem.

mv = ( M +m) V , m and M are masses of small and large object , v is the velocity of small object before collision and V is the velocity of both the objects together after collision .

.5 x .2 = (1.5 + .5)V

V = .05 m /s

2 ) We shall use formula for velocity of object after elastic collision as follows

v₁ = \frac{(m_1-m_2)}{(m_1+m_2)} u_1+\frac{2m_2u_2}{(m_1+m_2)}

m₁ and m₂ are masses of first and second object u₁ and u₂ are their initial velocity and v₁ and v₂ are their final velocity.

Putting the values

= \frac{(200-1000)}{(1000+200)} \times 1 +\frac{2 \times1000\times0}{(1000+200)}

= - .66 m /s

Since the sign is negative so it will be in opposite direction .

4 0
3 years ago
Which description of energy changes in nuclear reactions is correct?
Kryger [21]
The answer for this question is letter "B.Fission releases energy, and its products have greater stability."

Fission and Fusion are both nuclear reactions that when they release energy, they make the nuclei more stable. So among the choices, option B is the most fitting for the definition. 
4 0
3 years ago
You have to travel 5000 meters. You only have two minutes (120 seconds) to get there. How fast must you travel to get there in t
Sholpan [36]

Answer:

416.667 m/s

Explanation:

divide the distance by the time

8 0
3 years ago
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