Superman must stop a 105-km/h train in 160 m to keep it from hitting a stalled car on the tracks. The train's mass is 3.6 x 105 kg. 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 direction opposite to the initial velocity. ? FTs = Value Units Submit Request Answer Part B Compare the magnitudes of the force exerted on the train and the weight of the train (give as %). Express your answer using two significant figures. FTS %3D mg

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Superman must stop a 105-km/h train in 160 m
to keep it from hitting a stalled car on the tracks.
The train's mass is 3.6 x 105 kg.
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 direction opposite to the initial velocity.
?
FTs =
Value
Units
Submit
Request Answer
Part B
Compare the magnitudes of the force exerted on the train and the weight of the train (give as %).
Express your answer using two significant figures.
FTs
%
%3D
mg
Transcribed Image Text:Superman must stop a 105-km/h train in 160 m to keep it from hitting a stalled car on the tracks. The train's mass is 3.6 x 105 kg. 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 direction opposite to the initial velocity. ? FTs = Value Units Submit Request Answer Part B Compare the magnitudes of the force exerted on the train and the weight of the train (give as %). Express your answer using two significant figures. FTs % %3D mg
Part C
How much force does the train exert on Superman?
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 direction opposite to the initial velocity.
?
FST =
Value
Units
Transcribed Image Text:Part C How much force does the train exert on Superman? 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 direction opposite to the initial velocity. ? FST = Value Units
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