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
Alik [6]
4 years ago
12

A person fires a 38 gram bullet straight up into the air. It rises, then falls straight back down, striking the ground with a sp

eed of 345 m/s. The bullet embeds itself into the ground a distance of 8.9 cm before coming to a stop. What force does the ground exert on the bullet? Express your answer in newtons.
Physics
1 answer:
Y_Kistochka [10]4 years ago
4 0

Answer:

Force exerted = 25.41 kN

Explanation:

We have equation of motion

      v² = u²+2as

u = 345 m/s, s = 8.9 cm = 0.089 m, v = 0 m/s

     0² = 345²+2 x a x 0.089

       a = -668679.78 m/s²

Force exerted = Mass x Acceleration

Mass of bullet = 38 g = 0.038 kg

Acceleration = 668679.78 m/s²

Force exerted = 25409.83 N = 25.41 kN

You might be interested in
List two pieces of evidence<br> related to this picture
tatyana61 [14]

Answer:

there was a crash you can tell cause of the 2 cars the dog is curious on what happened, you can tell because the dog is looking at the cash

4 0
3 years ago
Read 2 more answers
How to find the frictional force acting on an object (not the friction coefficient)? ...?
Dovator [93]
One can simply find the frictional force acting on an object using this equation:

 (Ffrict<span> = μ•F</span>norm<span>)
</span>

The process of determining the value of the individual forces acting upon an object involve an application of Newton's second law (Fnet=m•a) and an application of the meaning of the net force. If mass (m) and acceleration (a) are known, then the net force (Fnet) can be determined by use of the equation.

<span>Fnet = m • a</span>

If the numerical value for the net force and the direction of the net force is known, then the value of all individual forces can be determined.

7 0
3 years ago
Which type of wave is classified as electromagnetic?
Nimfa-mama [501]

Answer: B) Light

Explanation: light waves are Electromagnetic waves. Visible light is one of the many types of electromagnetic waves. The others are mechanical waves.

8 0
3 years ago
Read 2 more answers
You and your roommate are moving to a city360 mi away. Your roommate drives a rental truck at a constant 50 mi/h , and you drive
AnnyKZ [126]

Answer:

42 minutes

Explanation:

First, let us find out the time required by the roommate, who is driving the truck, to reach the city.

We know that,

time=\frac{distance}{speed} =\frac{360}{50} hrs=7.2hrs

Now, you are planning to rest a bit after traveling for an hour. So,

distance covered in that 1 hour = 60mi/h\times1h=60 miles

time required by you to cover the total distance = \frac{360mi}{60mi/h} =6hours

If you wish reach at the destination half an hour (0.5 h) before your roommate, you can expend a total of 7.2-0.5=6.7hours throughout your journey.

Hence, you can rest for  6.7-6=0.7hours=(0.7\times60)minutes=42minutes

3 0
3 years ago
Assume the first dot for animal A represents t = 0. At which time does animal B overtake animal A?
Maslowich

The time in which the animal B overtake animal A according to the motion map is at 2 seconds.

<h3>What is a Motion map?</h3>

This is referred to as one-dimensional plots built off of a position line and depicts velocity and acceleration.

The time in which Animal B is ahead of animal A is at 2 seconds which therefore makes it the most appropriate choice.

Read more about Motion map here brainly.com/question/5064705

#SPJ1

8 0
2 years ago
Other questions:
  • A cue ball has a mass of 0.5 kg. During a game of pool, the cue ball is struck and now has a velocity of 3 . When it strikes a s
    13·2 answers
  • An airplane travels 500 miles in 2.5 hours. What is the speed of the plane in mi/sec
    6·1 answer
  • List the main types of electromagnetic waves in order of increasing frequency. radio waves, microwaves, infrared, visible light,
    5·2 answers
  • The heat from the sun mainly comes by​
    7·1 answer
  • The force that generates wind is ________. centrifugal force pressure gradient force coriolis force gravity force
    15·2 answers
  • A train travelled 2 hrs along a windy truck from Tema to Tano in 108km.What is the average speed of the train​
    13·1 answer
  • State 8/15 as a decimal correct to four decimal places​
    10·1 answer
  • An electrical kettle for use on a 240V supply is rated at 3000W . The minimum current the cable supplying it should be able to c
    13·1 answer
  • What is the approximate wavelength of a light whose first-order bright band forms a diffraction angle of 45. 0° when it passes t
    10·2 answers
  • Help please!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!