Answered: 2 A train of mass 20,000 kg is… | bartleby

Related questions

Question

2 A train of mass 20,000 kg is travelling along a
horizontal surface at 35 ms-1 when the driver sees
a man tied to the tracks ahead, disengages the
engine and applies the brakes. When braking the
total resistive force on the train is (4000 + 500v) N,
where v is the speed of the train. How far does the
train travel before coming to rest?

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

An object of mass m= 7.6 kg is free to move on a horizontal surface without any friction. It is initially at rest and starts moving under a net force of F =(3N)î +(4N)ĵ . What is the object's speed in m/s after moving 1 meter?
Particles q1 = -53.0 µC, q2 = +105 µC, and q3 = -88.0 µC are in a line. Particles q1 and q2 are separated by 0.50 m and particles q2 and q3 are separated by 0.95 m. What is the net force on particle q3? Remember: Negative forces (-F) will point Left Positive forces (+F) will point Right -53.0 μ C +105 uC -88.0 µC 91 + 42 q3 E 0.50 m 0.95 m Enter
Object b has a mass mb and starts from rest at position x=xi, where xi>0. Derive an expression for the speed of the particle when it is at the position x=xf.
An object of mass m = 2.9 kg is free to move on a horizontal surface without any friction. It is initially at rest and starts moving under a net force of F = (3N)i + (4N)j. What is the object's speed in m/s after moving 1 meter?
You are the pilot of a spacecraft intended for travel at very high speeds. Before leaving you measure the spacecraft to be 31.4 m long and have a mass of 5.28 x 104 kg. During your travel, you pass a planet and exchange information with an observer on the planet. You are told that your spacecraft has been measured to be 28.6 m long. a. How fast is your spacecraft travelling with respect to the planet? b. You are told there is a nearby planet that is stationary with respect to the first planet. The observer on the first planet says it will take you 25 s to reach the nearby planet. How far away does your co-pilot on the spacecraft say the nearby planet is? c. How much energy was required to accelerate your spacecraft to this speed?
Two planets of mass 3 x 1025kg are release from rest 2.0 x 1012 m apart. What is the speed of the planets when they are half this distance apart?
O 0.2 MPa A 3500 Ib. car moving at 25 mi/h is accelerated at a constant rate of 15 ft/s^2^ up to a speed of 50 mi/h. What are the force and total time required? * O 1632 Ibf, 183 s O 7523 Ibf, 175 s O 52500 Ibf, 183 s O 7523 Ibf, 183 s O 1832 Ibf, 175 s O 2083 Ibf, 175 s • Document 14 5jpg O O O OO 0
The aurora is caused by electrons and protons from the sun that get captured by the earth's magnetic field and spiral into its atmosphere along the direction of the earth's magnetic field. The typical speed of captured electrons is about 0.003c (0.003 times the speed of light), and the typical speed for captured protons is about 20 times smaller. What are the maximum radii of the circular component of these particles' motion around the field direction? What are their orbital frequencies?
What is the smallest value of B that can be set up at the equator to permit a proton of speed 10 m/s to circulate around the earth? (R = 6.4× 106 m, m = 1.67 × 10² kg).