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
love history [14]
3 years ago
7

A 17926-lb truck enters an emergency exit ramp at a speed of 75.6 ft/s. It travels for 6.4 s before its speed is reduced to 30.3

ft/s. Determine the braking force by the truck if the acceleration is constant. (Use Impulse-Momentum concepts.) Assume theta = 21.4 degrees
Physics
1 answer:
I am Lyosha [343]3 years ago
6 0

Answer:

F_{braking}=337299 pdl

Explanation:

Impulse-Momentum relation:

I=\Delta p\\ F_{total}*t=m(v_{f}-v{o})

F_{total}=-F_{braking}+mgsin{\theta}

We solve the equations in order to find the braking force:

F_{braking}=m(v_{o}-v{f})/t+mgsin{\theta}=17926(75.6-30.3)/6.4+17926*32.17*sin21.4=337299 pdl

You might be interested in
Which statement about polymers is true?
Mamont248 [21]
Where are the statements? You forgot to attach them lol
6 0
3 years ago
which best describes what happens with the sonar to sound pulses from a ship after they hit the ocean floor?
lakkis [162]

Answer:

With sonar, what happens to sound pulses from a ship after they hit the ocean floor? ... They bounce back to the ship.

Explanation:

3 0
3 years ago
What is the trend noticed with the inner planets
lutik1710 [3]
The inner planets are closer to the Sun and are smaller and rockier. ... The outer planets are further away, larger and made up mostly of gas. The inner planets (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth and Mars.Apr 23, 2014
7 0
3 years ago
Which of the following is an incorrect statement of one of newtons laws of motion?
weqwewe [10]

Explanation:

The newton's laws of motion are:

First law:

  "A body will remain in its state of rest or of uniform motion along a path unless it is acted upon by an external force. ".

This is popularly called the law of inertia.

Second law:

 "the acceleration of a body is produced by a net force that is inversely proportional to the mass of the body".

Third law:

  "action and reaction forces are equal and opposite in direction".

learn more:

Newton's laws brainly.com/question/11411375

#learnwithBrainly

5 0
3 years ago
Five basket ball teams are playing in a tournament. The teams will play with each other only one time. How many games will be pl
77julia77 [94]

<em>Ten games</em> will be played.

The first team can be any one of 5 .  For each of those, the opponent can be any one of the other 4 .

Number of ways to pair them up = (5 x 4) = 20 ways .

<em>BUT</em> ... Whether the Reds play the Blues, or the Blues play the Reds, it's the SAME GAME.  Each possible game shows up twice in the list of 20 ways.  So there are really only 10 different pairs ==> <em>10 games</em> .

3 0
3 years ago
Other questions:
  • Which are true statements?
    9·1 answer
  • A 3.5 x 10-6 C charge is located 0.28 m from a 2.8 x 10-6 C charge. What is the magnitude of the force being exerted on the smal
    10·1 answer
  • The moon has much less gravitational force than earth. What would happen if you went to the moon?
    8·1 answer
  • Tarzans mass is 75kg. calculate his weight
    14·1 answer
  • Of the charge Q initially on a tiny sphere, a portion q is to be transferred to a second, nearby sphere. Both spheres can be tre
    14·1 answer
  • Write a main idea statement about the nervous system.
    15·2 answers
  • When does a bouncing ball have the least amount of kinetic energy?
    5·2 answers
  • How many spoonfuls of water did it take for your sponge to be 100% saturated?
    6·1 answer
  • Carbon-14 is used to determine the time an organism was living. The amount of carbon-14 an organism has is constant with the atm
    7·2 answers
  • How does a second class lever make our work easier​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!