Superman must stop a 120-km/h train in 110 m to keep it from hitting a stalled...
Superman must stop a 120-km/h train in 110 m to keep it from hitting a stalled car on the tracks. The train's mass is 3.6 × 105 kg. Determine the force that must be exerted on the train. Compare the magnitudes of the force exerted on the train and the weight of the train (give as %).
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Superman must stop a 120-km/h train in 110 m to keep it from
hitting a stalled...
Superman must stop a 170-km/h train in 160 m to keep it from hitting a stalled...
Superman must stop a 170-km/h train in 160 m to keep it from hitting a stalled car on the tracks. If the train's mass is 3.6×105 kg , how much force must he exert (find the magnitude)? Compare to the weight of the train (give as %). How much force(in magnitude) does the train exert on Superman?
2. Superman must stop a 120-km/h train in 100 m to keep it from hitting a...
2. Superman must stop a 120-km/h train in 100 m to keep it from hitting a stalled car on the tracks. The train's mass is 3.6 × 105 kg. a. Determine the force that must be exerted on the train.Express your answer to two significant figures and include the appropriate units. Enter positive value if the direction of the force is in the direction of the initial velocity and negative value if the direction of the force is in the...
Please help me with the following questions: 1) Superman must stop a 115-km/h train in 150...
Please help me with the following questions: 1) Superman must stop a 115-km/h train in 150 m to keep it from hitting a stalled car on the tracks. The train's mass is 3.6 × 105 kg. Part A: Determine the force that must be exerted on the train. Express your answer to two significant figures and include the appropriate units. Enter positive value if the direction of the force is in the direction of the initial velocity and negative value...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses 2.20...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
t the Wackes in ersed from e with mantude of 15 The Black I haa t...
t the Wackes in ersed from e with mantude of 15 The Black I haa t he block 2 has mass and Neck has a mass Calculate c t of inte friction between black and a (A) 0.34 B) 0.45 (C) 0.87 (D) 0:54 0.99 14 The work of a given force has its maximum positive value when CA) The vector of displacement and force are at the same direction B) The vector of displacement and force are at the...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
t the Wackes in ersed from e with mantude of 15 The Black I haa t he block 2 has mass and Neck has a mass Calculate c t of inte friction between black and a (A) 0.34 B) 0.45 (C) 0.87 (D) 0:54 0.99 14 The work of a given force has its maximum positive value when CA) The vector of displacement and force are at the same direction B) The vector of displacement and force are at the...
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