Question

A freight train has a mass of 1.0 ✕ 107 kg. If the locomotive can exert...

A freight train has a mass of 1.0 ✕ 107 kg. If the locomotive can exert a constant pull of 7.0 ✕ 105 N, how long does it take to increase the speed of the train from rest to 70 km/h?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A large diesel locomotive has a mass of about 1.1 x 105 kg and is traveling...
A large diesel locomotive has a mass of about 1.1 x 105 kg and is traveling at night along with a track cruising at its standard speed of 120 km/h. As it comes around a bend, its conductor sees a small diesel locomotive (mass of about 3.00 x 104 kg) stopped on a straight stretch of tracks in front of him. He applies the engine breaks, but ice on the tracks cause him to slide. Assuming this is a closed...
Find the speed [km/h] at which Superman (mass=85 kg) must fly into a train (mass =...
Find the speed [km/h] at which Superman (mass=85 kg) must fly into a train (mass = 19000 kg) traveling at 77 km/hr to stop it? A: 1.38×104 B: 1.72×104 C: 2.15×104 D: 2.69×104 E: 3.36×104 Tries 0/1 Running into the train at that speed would severely damage both train and passengers. Calculate the minimum time [s] Superman must take to stop the train, if the passengers experience an average acceleration of -0.44*g (g = 10 m/s2)? A: 1.59 B: 2.31...
A large cruise ship of mass 6.00 ✕ 107 kg has a speed of 12.8 m/s...
A large cruise ship of mass 6.00 ✕ 107 kg has a speed of 12.8 m/s at some instant. (a) What is the ship's kinetic energy at this time? J (b) How much work is required to stop it? (Give the work done on the ship. Include the sign of the value in your answer.) J (c) What is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.90 km? N
A runaway train car that has a mass of 11,000 kg travels at a speed of...
A runaway train car that has a mass of 11,000 kg travels at a speed of 4.5 m/s down a track. Compute the time (in s) required for a force of 1000 N to bring the car to rest. I got 45 m/s but my homework is saying I got it wrong.
A 0.294 kg mass slides on a frictionless floor with a speed of 1.25 m/s. The...
A 0.294 kg mass slides on a frictionless floor with a speed of 1.25 m/s. The mass strikes and compresses a spring with a force constant of 42.2 N/m. How far does the mass travel after contacting the spring before it comes to rest? How long does it take for the spring to stop the mass?
A large cruise ship of mass 6.00 ✕ 107 kg has a speed of 10.2 m/s...
A large cruise ship of mass 6.00 ✕ 107 kg has a speed of 10.2 m/s at some instant. (a) What is the ship's kinetic energy at this time? ______J (b) How much work is required to stop it? (Give the work done on the ship. Include the sign of the value in your answer.) ______J (c) What is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.60 km? ______N
15. A satellite in Earth orbit has a mass of 107 kg and is at an...
15. A satellite in Earth orbit has a mass of 107 kg and is at an altitude of 1.91 106 m. (Assume that U = 0 as r → ∞.) (a) What is the potential energy of the satellite–Earth system? (b) What is the magnitude of the gravitational force exerted by the Earth on the satellite? (c) What force, if any, does the satellite exert on the Earth? (Enter the magnitude of the force, if there is no force enter...
Boeing 767-400ER model airplane has two engines. Each engine can have a maximum thrust (mechanical force)...
Boeing 767-400ER model airplane has two engines. Each engine can have a maximum thrust (mechanical force) output of 270 kN. When the plane is cruising at 717.25 km/h, the pilot decides to increase the speed to the typical 850.0 km/h. If drag on the plane is on average 26188 N, and the engines are engaged at 55.42 % of their maximum thrust output, and the plane weighs 149375 kg, how long does it take to reach the new cruising speed?...
Initially, the monkey is standing on the floor and the bananas are hanging above his head...
Initially, the monkey is standing on the floor and the bananas are hanging above his head near the pulley. The monkey’s mass is 2 kg and the mass of the bananas is 4 kg. The pull is 12 cm in diameter and has a mass of 2.0 kg. As the pulley turns, friction at the axle exerts a constant torque of magnitude 0.50 N. If the bananas and the monkey are released from rest with the bananas 1.0 m off...
1-      You can find your own mass in kg with the following information: 1.0 kg weighs...
1-      You can find your own mass in kg with the following information: 1.0 kg weighs about 2.2 lb. on Earth. a) What is your mass in kg? b) What is your weight in newtons? 2-      Gunter the weightlifter can lift a 230.0-kg barbell overhead on Earth. The acceleration due to gravity on the sun is 274 m/s2. a) Would the barbells be heavier on the sun or on Earth? b) How much (in newtons) would the barbells weigh on...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT