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
Lynna [10]
3 years ago
9

An 8.0g bullet, moving at 400 m/s, goes through a stationary block of wood in 4.0 x 10^-4s, emerging at a speed of 100 m/s. (a)

what average force did the wood exert on the bullet? (b) how thick is the wood?
Physics
1 answer:
Ierofanga [76]3 years ago
7 0

Answer:

Explanation:

Initial velocity (u) of the Bullet = 400 m/sec

Final velocity (v) of the Bullet = 100 m/sec

Bullet passed through the block in (t) = 0.0004 sec  

Using 1st Equation of motion :

400 m/s = 100 m/s - a (0.0004)

<em>Deceleration of Bullet = 750,000 m/sec^2 </em>

<em />

(a) F (force exerted by the wooden block on the bullet) = F (force exerted by the bullet on the wooden block)

F = m * a = 0.008 * 750,000<em> = </em>6000 N

(b) Using 3rd Equation of motion :

v^{2} = u^{2} - 2aS

10000 = 160000 - 2 * 750,000 * S

Thickness of wood (S) = 0.1 m

You might be interested in
Which is an example of sound energy
solong [7]
It would be the first one

8 0
3 years ago
Read 2 more answers
When passing another vehicle you are allowed to exceed the speed limit by?
lesantik [10]
If the other driver is going speed limit you can't pass him but if he's going slower than the limit you have to go in the left lane i'm not sure by how much i'll guess 5mph<span />
5 0
3 years ago
Which force requires contact?
Minchanka [31]

Answer:

A

Explanation: A is a example of Air resistance force, which is a contact force.

8 0
3 years ago
Read 2 more answers
Define unit aland how many types of unit are there . Name them?​
Lana71 [14]

Answer:

7. They arethe meter (m), the kilogram (kg), the second (s), the kelvin (K), the ampere (A), the mole (mol), and the candela (cd)

Explanation:

7. They arethe meter (m), the kilogram (kg), the second (s), the kelvin (K), the ampere (A), the mole (mol), and the candela (cd)

4 0
2 years ago
Babies typically say their first words:
deff fn [24]

Answer:

2nd one if you ask me

almost every baby stats to talk after their a year old

3 0
3 years ago
Other questions:
  • PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!
    14·1 answer
  • What temperature is the speed of a given chemical reaction the fastest?
    9·1 answer
  • Which of these have an elliptical orbit around the sun?
    7·2 answers
  • A skateboader is accelerating forward how would his acceleration change if he had more mass
    14·1 answer
  • What term generally describes small chunks of rocks and debris in space? PLEAS HURRY!
    6·2 answers
  • Check the attached image for the question~
    12·1 answer
  • A Car accelerates from 4 m/s to 16 m/s in 4 seconds. What is the car's
    9·2 answers
  • Velocity is the speed at which an object moves in a specific direction. It's measured in meters per second, minute or hour in a
    14·1 answer
  • What is the work required to raise a 20 Newton box from the surface of the earth to a height of 6 meters?
    11·1 answer
  • A volleyball that has an initial momentum of
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!