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
Natasha_Volkova [10]
3 years ago
13

Does anyone know how to do this? i tried doing some but i don't think i did them right.

Physics
1 answer:
geniusboy [140]3 years ago
6 0
When the velocity of an object is constant, there is no acceleration . Acceleration is defined as a change in velocity over time.
Problem three wants to know if velocity and acceleration have the same signs. I'll assume that on the x-axis the kick goes to the right, that means that velocity has a positive direction therefore positive, acceleration however, is slowing down therefore negative, this is commonly mistaken as deceleration but it's just negative acceleration.
 4. when there's constant acceleration, velocity is changing all the time
(constant acceleration would be seen as a parabolic motion where velocity is seen changing at every point.)
you can use the four kinematic equations to find several things like time, distance, and acceleration for the rest 
You might be interested in
Which factor causes global wind patterns?
Kay [80]

Answer:

B . unequal heating of the Earth's surface by the sun

4 0
2 years ago
Read 2 more answers
Two cars are traveling along perpendicular roads, car A at 40 mi/hr, car B at 60 mi/hr. At noon, when car A reaches the intersec
Serggg [28]

Answer:

\frac{dD}{dt} = -4 miles/hour

negative sign indicates that the distance is decreasing with time

Explanation:

Let at any time t after noon that is 12 p.m.  

distance traveled by car A = 40t

distance traveled by car B = 90-60t

then distance between the two cars at time t

D^2= (40t)^2+(90-60t)^2............1

also, at time 1 p.m.

distance D^2= (40\times1)^2+(90-60\times1)^2

D=50 Km

differentiating equation 1 w.r.t. t we get

2D\frac{dD}{dt}= 2\times40t\times40+2(90-60t)(-60)

put t= 1 and D= 50 we get

2\times50\frac{dD}{dt}= 3200\times1-3600\times1

\frac{dD}{dt} = -4 miles/hour

3 0
3 years ago
If you find two stars with the same Right Ascension, are they necessarily close together in the sky? Why or why not?
shepuryov [24]

In space, spatial coordinates can be roughly divided into measures of Right ascension and declination. The declination is measured in degrees while the ascent is measured in hours, minutes, seconds. When you have objects in space such as those of the characteristics presented we will have to they are not necessarily close together in the sky because we can find two stars on the same right ascension but on different declination lines (Which means they can be very far apart from each other)

8 0
2 years ago
Electrons are transferred in the formation is blank bonds
densk [106]

Answer:Electrons are transferred in the formation is ionic bonds.

Explanation:Why is because ionic bonds are caused by electrons transferring from one atom to another.

8 0
3 years ago
Does the epiglottis close the trachea when u swallow food
stiks02 [169]

Answer:

A flap of tissue called (the epiglottis) sits over the top of the trachea. This flap blocks food and drink from going down into the trachea when you swallow. But in some cases, food or drink can enter the trachea. It may go down as you swallow.

Explanation:

HOPE THIS HELPED :)

7 0
3 years ago
Other questions:
  • During exercise stored chemical energy is convorted to energy that can be used for ?
    14·2 answers
  • A car traveling at 24 m/s starts to decelerate steadily. It comes to a complete stop in 8 seconds. What is its acceleration?
    11·1 answer
  • 2. Tony sets up an experiment inside his classroom. He spaces 5 plants at equal
    11·2 answers
  • The electric resistance in a length of wire is doubled when the wire is _________.
    6·1 answer
  • -
    14·1 answer
  • At the presentation ceremony, a championship bowler is presented a 1.64-kg trophy which he holds at arm's length, a distance of
    13·1 answer
  • Does fat and soap have density? ​
    12·2 answers
  • one car accelerates at half the rate of another how much longer does it take the first car to travel a quarter mile
    12·1 answer
  • A 1-kilogram stone is being dropped from a bridge 100 meters above a gorge.
    7·2 answers
  • E-mail is usually a poor choice for the distribution of sensitive electronic files because __________. A. Paper copies seem more
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!