Atrain 483 m long is moving on a straight track with a speed of 42.4 m/s. the engineer applies the brakes at a crossing, and later the last car passes the crossing with a speed of 8.6 m/s. assuming constant acceleration, determine how long the train blocked the crossing. disregard the width of the crossing. answer in units of s.
Answers: 2
Physics, 22.06.2019 13:30
The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?
Answers: 1
Physics, 22.06.2019 18:30
Calculate the velocity of a car traveling in a straight path due east with a distance of 16 meters in 2 seconds. question 1 options: a)32 m/s b)32 m/s e c) 8 m/s e d) 8 m/s
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Physics, 22.06.2019 23:00
Amother used 150 watts of power to raise a 15 newton object in a time interval of 8.0 seconds. through what vertical distance was the object raised ?
Answers: 1
Atrain 483 m long is moving on a straight track with a speed of 42.4 m/s. the engineer applies the b...
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