1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
seraphim [82]
3 years ago
6

The distance required for a car to come to a stop will vary depending on how fast the car is moving. Suppose that a certain car

traveling down the road at a speed of 20 m / s 20 m/s can come to a complete stop within a distance of 80 m 80 m . Assuming the road conditions remain the same, what would be the stopping distance required for the same car if it were moving at speeds of 10 m / s 10 m/s , 40 m / s 40 m/s , or 5 m / s 5 m/s ?
Physics
1 answer:
djyliett [7]3 years ago
5 0

Answer:

Explanation:

If F be the force acting on the car to stop it

work done by force = change in kinetic energy

F X 80 = 1/2 m x 20²

F = 2.5 m

If speed is 10m/s

for distance d , the equation is

F x d = 1/2 x m x 10²

2.5 m x d = 1/2 x m x 10²

d = 20 m

If velocity is 40 m /s

F x d = 1/2 x m x 40²

2.5m x d = 1/2 m x 1600

d = 320 m

For v = 5 m/s

F x d = 1/2 m x 5²

2.5 m x d = 1/2 m x 5²

d = 5 m .

You might be interested in
In September 2016 you purchased a 125 shares of Grainger stock for $224.84. It is now September 2019 and Grainger stock is curre
Temka [501]

Answer:

Gain in capital = $ 70.72

Explanation:

Given:

- The price of stocks when purchased P_o = $ 224.84

- The price of stocks when sold P_s = $ 295.56

Find:

what would be your capital gain (loss) on the sale, ignoring commissions

Solution:

- The capital gain or loss on the selling of stocks stems from the difference of buying and selling value of stocks. The original price of stock was P_o and the selling price would be P_s. The difference would be:

                             capital gain = P_s - P_o

                             capital gain =  $295.56 - $224.84

                             capital gain = $ 70.72

- Hence, there would be a gain in capital if sold today for about $ 70.72.

6 0
3 years ago
what happens to the density, volume, mass, and shape of an ice cube put in a glass jar and left out in the Sun.
Elden [556K]
Density I'm not sure
volume unchanged
mass unchanged
shape- water
3 0
3 years ago
A wave is described by y(x,t) = 0.1 sin(3x + 10t), where x is in meters, y is in centimeters and t is in seconds. The angular wa
Mila [183]

Answer: 3 radians/meter.

Explanation:

The general sinusoidal function will be something like:

y = A*sin(k*x - ω*t) + C

Where:

A is the amplitude.

k is the wave number.

x is the spatial variable

ω is the angular frequency

t is the time variable.

C is the mid-value.

The rule that we can use to solve this problem, is that the argument of the sin( ) function must be in radians (or in degrees)

Then if x is in meters, the wave-number must be in radians/meters, so when these numbers multiply the "meters" part is canceled.

Then for the case of the function:

y(x,t) = 0.1 sin(3x + 10t)

Where x is in meters, the units of the wave number (the 3) must be in radians/meters. Then the angular wave number is 3 radians/meter.

5 0
3 years ago
When does a roller coaster have the most kinetic energy
photoshop1234 [79]
When the roller coaster going down


step by step
8 0
3 years ago
I need help one through five
Mama L [17]
Thinking critically is basically thinking outside of the box, so it's asking how does the bulub filament change after it's on, a filament is basically the wiring inside.
7 0
3 years ago
Other questions:
  • Two different sub-atomic particles are described below: Particle Y: Carries a positive charge Particle Z: Orbits the nucleus Whi
    15·2 answers
  • A gas is collected from a radioactive material; upon inspection, the gas is identified as helium. the presence of the helium ind
    8·1 answer
  • A 6.00-mH solenoid is connected in series with a 5.0-μF capacitor and an AC source. The solenoid has internal resistance 3.0 Ω w
    11·1 answer
  • The coordinates of a bird flying in the xy-plane are given by x(t)=αt and y(t)=3.0m−βt2, where α=2.4m/s and β=1.2m/s2.part a:Cal
    10·1 answer
  • The burning of a log releases the logs chemical_energy into other forms of energy
    14·1 answer
  • A child on a high dive has a mass of 40 kilograms. If the high dive is 10 meters in the air, what is the potential energy? GPE=m
    9·1 answer
  • I WILL MARK BRAINLIEST
    5·2 answers
  • Two forces act on a 1250 kg sailboat as it moves through the water with an initial velocity of 11 m/s. The forward force of the
    15·1 answer
  • Explain What determines the amount of<br> chemical energy a substance has?
    12·1 answer
  • Can u pls help me ........
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!