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
frutty [35]
3 years ago
5

.2, A car starting from rest has an acceleration of

Physics
1 answer:
riadik2000 [5.3K]3 years ago
7 0

Answer: 2.5 m/s and 6.25 m

Explanation:

u = 0

a = 0.5 m/s²

t = 5 s

v = u + at

=  0 + 0.5 × 5

= <u>2.5 m/s</u>

s = ut + 1/2 at²

= 1/2 × 2.5 × 5

=<u> 6.25 m</u>

You might be interested in
Categorize these resources as either renewable or Non-renewable
valentinak56 [21]

renewable: water, plants, animals

nonrenewable: rocks, soil

i hope this helps :)

5 0
3 years ago
It is estimated that uranium is relatively common in the earth's crust, occurring in amounts of 4 g / metric ton. A metric ton i
timama [110]

Answer:

The mass of Uranium present in a 1.2mg sample is 4.8 \cdot 10^{-6}\,mg

Explanation:

The ration between Uranium mass and total sample mass is: \frac{4g}{1000kg} =\frac{4g}{1000000g}=\frac{1}{250000}

For a sample of mass 1.2 mg, the amount of uranium is:

1.2\, mg \cdot \frac{1}{250000}=4.8 \cdot 10^{-6}\,mg

7 0
3 years ago
Use the drop-down menus to complete the sentences.
Grace [21]

Answer:

1) thinner, diverge

2) thicker, converge

Explanation:

i got it right

5 0
2 years ago
Read 2 more answers
Which is a characteristic of a physical change? (1 point)
krek1111 [17]
The answer would be a.

a chemical change is a change to the chemical makeup of a substance so if the bonds are unchanged it would be a characteristic of a physical change
6 0
3 years ago
21) A youngster having a mass of 50.0 kg steps off a 1.00 m high platform. If she keeps her legs fairly rigid and comes to rest
zlopas [31]

Answer:

-22,150 N

Explanation:

When the youngster jumps off the platform, during the fall her initial potential energy is converted into kinetic energy, according to the law of conservation of energy. Therefore, we can write:

mgh=\frac{1}{2}mu^2

where the term on the left is the potential energy while the term on the right is the kinetic energy, and where

m = 50.0 kg is the mass of the youngster

g=9.8 m/s^2 is the acceleration due to gravity

h = 1.00 m is the heigth of the platform

u is the speed of the youngster as she reaches the floor

Solving for u,

u=\sqrt{2gh}=\sqrt{2(9.8)(1.00)}=4.43 m/s

Then, when the youngster hits the floor, the force exerted on her during the deceleration is given by:

F=\frac{\Delta p}{\Delta t}=\frac{m(v-u)}{\Delta t}

where \Delta p is her change in momentum, and where

m is the mass

v = 0 is the final velocity (she comes to a stop)

u = 4.43 m/s is the initial velocity

\Delta t=10.0 ms =0.010 s is the duration of the collision

Substituting,

F=\frac{(50.0)(0-4.43)}{0.010}=-22150 N

And the negative sign means the direction of the force is opposite to the motion (so, upward).

6 0
3 years ago
Other questions:
  • A pilot heads his jet due east. The jet has a speed of 475 mi/h relative to the air. The wind is blowing due north with a speed
    10·1 answer
  • If an atom has 7 valence electrons, how many electrons does it need to gain to achieve a stable electron configuration?
    7·2 answers
  • Does the magnetic field- due to the current carrying wire- curve in a clockwise or counter-clockwise direction in the area betwe
    12·1 answer
  • An ideal spring hangs from the ceiling. A 2.15 kg mass is hung from the spring, stretching the spring a distance d = 0.0895 m fr
    12·1 answer
  • Calculate the most probable speed of an ozone molecule in the stratosphere
    5·1 answer
  • Arrange the following kinds of electromagnetic radiation in order of increasing wavelength: infrared, green light, red light, ra
    6·1 answer
  • _______________have a negative charge and are located on the outside of the nucleus.
    6·1 answer
  • How are metamorphic rocks like igneous rocks? How are they like sedimentary rocks?
    14·1 answer
  • Please I need help its timed-
    13·2 answers
  • A 30kg mass is brought from the earth to the moon what is the weight on the earth
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!