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
gavmur [86]
3 years ago
9

While Calvin is doing a physics experiment outside with a radar gun, he notices that after three seconds a car reaches a speed o

f 20 m/s while accelerating at 3 m/s squared. what was the initial velocity of the car?
Physics
1 answer:
nirvana33 [79]3 years ago
3 0

The initial velocity of the car is 11 m/s.

Explanation:

  • Here, we can use the equations of motions.
  • The first of equation of motion is v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time.
  • The given parameters are,

Final velocity, v = 20 m/s

acceleration of the care, a = 2 m/s^{2}

time, t = 3 s

Initial velocity, u = ?

  • Hence, the equation can be written as u = v - at

once you substitute all these vales, you will get u = 11 m/s

You might be interested in
About how many times greater is the density of a neutron star compared to a white dwarf?
irina1246 [14]

Answer:

Explanation:

over a million times

7 0
3 years ago
Your brother is insisting that you’ll never hear a sound produced behind a barrier wall at the end of your yard you notice that
Tresset [83]

Answer

D.Diffraction

Explanation

Diffraction is a property that is experienced by waves when they come across a barrier when they are in motion.

The ways tends to curve behind the barrier. This is called diffraction of waves.

Now, sound is a wave and it also experience diffraction. . So the brother will be able to hear the sound due to diffraction

8 0
3 years ago
Read 2 more answers
If a bus travels 6 km in 10 minutes, what distance does it travel in 1 second ​
loris [4]

Answer:

Your answer is 10 m/s...

4 0
3 years ago
Read 2 more answers
Put the following events in the order they occurred to lead to the formation of the solar system:
AfilCa [17]

Answer:

Third → First → Second → Fourth

Explanation:

Initially helium and Hydrogen in abundance started to form atoms

Following the atoms formation by hydrogen and helium bombardment of new matter into the Earth took place.

The bombardment of matter resulted in separation of Earth into respective layers based on the weight of the matter.

A primitive ocean was created as a result of off gassing of the volcanoes.

8 0
3 years ago
An object dropped from Cliff falls with a constant acceleration of 10 metre per second square find its Speed of two seconds afte
julsineya [31]

Answer:

20 meters per second

Explanation:

If an object accelerates for 2 seconds, and accelerates by 10 meters per second, then that objects speed will be 20 meters per second, assuming hat there are no other factors involved.

3 0
3 years ago
Read 2 more answers
Other questions:
  • A 65-cm segment of conducting wire carries a current of 0.35 A. The wire is placed in a uniform magnetic field that has a magnit
    13·2 answers
  • The efficiency of a Stirling cycle depends on the temperatures of the hot and cold isothermal parts of the cycle.If you increase
    11·1 answer
  • Which of the following best describes a property of water?
    15·1 answer
  • Which will settle out if allowed to sit on a table? suspension colloid solution compound a suspension a colloid a solution a com
    7·2 answers
  • Rank the nonmetals in each set from most reactive (1) to least reactive (3). Bromine: Chlorine: Iodine:
    6·2 answers
  • Use newton's method to find the second and third approximation of a root of
    8·1 answer
  • a child sleds down a steep snow-covered hill with an acceleration of 3.94 m/s^2. if her initial speed is 0.0m/s and her final sp
    15·1 answer
  • A box is initially at rest on a frictionless inclined plane
    6·1 answer
  • NASA sends an unmanned lander to test conditions on the surface of Mars. What is the magnitude of the gravitational force acting
    12·1 answer
  • Einstein calculated that ripples of gravity travel at exactly the speed of _____
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!