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 direction opposite to the initial velocity.
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.
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.
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2. Superman must stop a 120-km/h train in 100 m to keep it from
hitting a...
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...
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 %).
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?
What average force is required to stop a 1700 kg car in 9.0 s if the...
What average force is required to stop a 1700 kg car in 9.0 s if the car is traveling at 85 km/h ? 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.
What average force is required to stop a 1900 kg car in 8.0 s if the...
What average force is required to stop a 1900 kg car in 8.0 s if the car is traveling at 100 km/h ? 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.
A car moving at 90 km/h passes a 1.21 km -long train traveling in the same...
A car moving at 90 km/h passes a 1.21 km -long train traveling in the same direction on a track that is parallel to the road. Part A If the speed of the train is 71 km/h , how long does it take the car to pass the train? Express your answer using two significant figures. Part B How far will the car have traveled in this time? Express your answer using two significant figures. Part C If the car...
If a car generates 16 hp when traveling at a steady 100 km/h , what must...
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Calculate the forces that the supports A and B exert on the diving board shown in...
Calculate the forces that the supports A and B exert on the
diving board shown in (Figure 1) when a 58-kg person stands at its
tip.
Part A
Calculate the force that the support A exerts on the diving
board. Ignore the weight of the board.
Express your answer to two significant figures and include the
appropriate units. Enter positive value if the force is upward and
negative value if the force is downward.
FA =
-1710 N
Part B...
Two men exert forces of F = 86 lb and P = 54 lb on the...
Two men exert forces of F = 86 lb and P = 54 lb on the ropes. 12 ft Part A Determine the moment of the force F about A. Express your answer to three significant figures and include the appropriate units. Enter positive value if the moment is counterclockwise and negative value if the moment is clockwise. (MA)F Value Units Determine the moment of the force P about A. Express your answer to three significant figures and include the...
If a wind begins blowing from the southwest at a speed of 100 km/h (average), calculate...
If a wind begins blowing from the southwest at a speed of 100 km/h (average), calculate the velocity (magnitude) of the plane relative to the ground. [Hint: First draw a diagram.| Constants Express your answer to three significant figures and include the appropriate units. An airplane is heading due south at a speed of 620 km/h Value Units Submit X Incorrec; Try Again; 5 attempts remaining ▼ Part B Cakculate the velocity (direction) of the plane relative to the ground...
Calculate the forces that the supports A and B exert on the
diving board shown in (Figure 1) when a 58-kg person stands at its
tip.
Part A
Calculate the force that the support A exerts on the diving
board. Ignore the weight of the board.
Express your answer to two significant figures and include the
appropriate units. Enter positive value if the force is upward and
negative value if the force is downward.
FA =
-1710 N
Part B...
Two men exert forces of F = 86 lb and P = 54 lb on the ropes. 12 ft Part A Determine the moment of the force F about A. Express your answer to three significant figures and include the appropriate units. Enter positive value if the moment is counterclockwise and negative value if the moment is clockwise. (MA)F Value Units Determine the moment of the force P about A. Express your answer to three significant figures and include the...
If a wind begins blowing from the southwest at a speed of 100 km/h (average), calculate the velocity (magnitude) of the plane relative to the ground. [Hint: First draw a diagram.| Constants Express your answer to three significant figures and include the appropriate units. An airplane is heading due south at a speed of 620 km/h Value Units Submit X Incorrec; Try Again; 5 attempts remaining ▼ Part B Cakculate the velocity (direction) of the plane relative to the ground...
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