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
harkovskaia [24]
3 years ago
11

April moves from a position that is 5 m north of her front door to a new position that is 3 m south of her front door. If this m

ovement takes her 4 seconds what is her velocity?
Physics
1 answer:
DanielleElmas [232]3 years ago
5 0

Velocity =

(displacement)/(time for the displacement), in the direction of the displacement.

Displacement = 8 m south
Time for the displacement = 4 seconds
Direction of the displacement = south

Velocity (8 m south) / (4 seconds), to the south

Velocity = 2 m/s, toward the south

You might be interested in
What is the approximate weight of a 20-kg cannonball on earth?
disa [49]
The weight of an object is taken to be the force on the object due to gravity. The weight ( W ) is the product of the mass ( m ) of the object and the magnitude of the gravitational acceleration ( g ).
On Earth: g = 9.81 m/s²
m = 20 kg
W = m · g = 20 kg · 9.81 m/s² = 196.2 N
6 0
3 years ago
during convection, hot material _____ (expands & sinks, cools & rises, expands & rises, deflates & rises) then m
Lady bird [3.3K]

Answer:

During convection, hot material expands & rises then moves to the side and cools & sinks. this circular pattern is called a convection current.

Explanation:

Convection is one of the three methods of transfer of heat. It occurs only in fluids (liquids or gases).

Convection occurs when there is a source of heat that heats a fluid, such as in a boiling pot of water. The water which is on the bottom of the pot becomes warmer before than the water at the top (because it is closer to the flame), and so it becomes less dense: for this reason, it expands and it becomes rising. On the contrary, the water on top is colder, so it is more dense and starts sinking, replacing the warmer water. As the new part of water gets warmer, it starts rising, and so the process is continuously repeated. This circular current is called convection current.

4 0
3 years ago
Read 2 more answers
The length of second, s pendulum at a place where gravitational acceleration ]g] is 9.8 m/s
amm1812
O.99 m long .simple pendulum time period is 2s for second formula then use formula T=2pi.rt(lenght/gravity)
6 0
3 years ago
An organ system is best described by which of the following?
earnstyle [38]
A group of cells together
3 0
3 years ago
Read 2 more answers
A car accelerates from 20mi/hr to 60mi/hr. How many times greater is the car's kinetic energy at the higher speed compared to th
Ainat [17]

Answer:

9 times

Explanation:

Kinetic energy is:

KE = ½ mv²

When we triple the velocity, the kinetic energy increases by a factor of 9.

9KE = ½ m(3v)²

4 0
3 years ago
Other questions:
  • The adjustments that your eyes make as they look from objects near to objects far away or from objects far away to objects close
    13·1 answer
  • The Hubble constant, $H_{0}$, is the ratio of the recessional velocity of a galaxy to its distance. The Hubble constant is estim
    10·1 answer
  • How are lava and magma the same
    12·1 answer
  • 9. Using these words explain how matter and energy interact when waves are generated. Disturbance ______________________________
    9·1 answer
  • After a big snowfall, you take your favorite rocket‑powered sled out to a wide field. The field is 223 m223 m across, and you kn
    13·1 answer
  • What type of clothing is most suitable to facilitate this? A. a pair of pants with a cord B. a flame-resistant pair of pants C.
    13·1 answer
  • Does chess make you smarter?
    11·1 answer
  • A roller coaster car is released from rest as shown in the image below. If
    13·1 answer
  • A wave carries _____ from one place to another <br><br> Mechanical waves carry energy through ______
    7·2 answers
  • How we will measure centimeters
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!