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
Semenov [28]
3 years ago
15

A car heading north collides at an intersection with a truck heading east. if they lock together and travel 28 m.s at 46 degrees

north of east just after the collision, how fast was the car initially traveling? assume that the two vehicles have the same mass.
A) 30 m/s
B) 80 m/s
C) 20 m/s
D) 40 m/s
Physics
1 answer:
Dominik [7]3 years ago
4 0

Answer:

C) 20 m/s

Explanation:

The collision of the car and truck will give a single resultant velocity due to equal masses.

We'll treat this question as a vector question.

The velocity profile will form a right angle triangle.

To calculate the velocity of the car

Let the velocity be x

Sina = x/28

Sin46= x/28

0.7193*28 = x

20 = x

X = 20 m/s

You might be interested in
What velocity must a car with a mass of 1280 kg have in order to have the same momentum as a 2230?
sveta [45]
Momentum = (mv). 
<span>(2110 x 24) = 50,640kg/m/sec. truck momentum. </span>
<span>Velocity required for car of 1330kg to equal = (50,640/1330), = 38m/sec</span>
8 0
3 years ago
How Can the human ear detect the sound
liq [111]

Explanation:

The eardrum vibrates from the incoming sound waves and sends these vibrations to three tiny bones in the middle ear. These bones are called the malleus, incus, and stapes.

8 0
2 years ago
What is the study of kinematics based upon ?<br><br>thankyou ~​
NikAS [45]

Kinematics is the study of the motion of a system of bodies without directly considering the forces or potential fields affecting the motion. In other words, kinematics examines how momentum and energy are shared among interacting bodies.

8 0
2 years ago
As a marble rolls across the floor, it gradually slows to a stop due to friction. Which statement best describes the change in m
Olegator [25]

Answer:

I belive it would be "C"

Explanation:

If it was any of the other answers "B" it would instantly stop. "A" it would roll forever.

3 0
3 years ago
A density triangle is a tool that can be used to find
Anna [14]
The answer is D
Hope this helps
4 0
3 years ago
Other questions:
  • The number ocean waves that pass a buoy in one second is _ of the wave
    11·2 answers
  • Bones provide both structure and protection for the body. A t. B f
    11·1 answer
  • Biological systems use free energy based on empirical data that all organisms require a constant energy input. The first law of
    15·1 answer
  • Is wind electrically charged
    13·1 answer
  • Please help asap I need this rn
    10·1 answer
  • A sample of the inert gas krypton has its pressure tripled. if the original volume is 12 l, what is the final volume in l
    10·1 answer
  • Why would scientists call solids and liquids a condensed phase of matter?
    8·1 answer
  • WHO WANTS TO BE THE BRAINLIEST???
    10·2 answers
  • What is the weight of a 20 kg box on the Earth?<br> A) 2 N <br> B) 20 N<br> C) 200 N
    15·1 answer
  • A bike rider was moving to the right at a constant speed. Suddenly the wind then starts blowing against her with 3 N of force to
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!