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?
Superman must stop a 170-km/h train in 160 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 %).
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 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...
How much work must be done to stop a 1200-kg car traveling at 145 km/h ?
How much work must be done to stop a 1200-kg car traveling at 90 km/h ? Express your answer to two significant figures and include the appropriate units.
How much work must be done to stop a 1150-kg car traveling at 90 km/h ? Express your answer to two significant figures and include the appropriate units.
You're carrying a 3.6-m-long, 21 kg pole to a construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35 cm from its tip. How much force must you exert to keep the pole motionless in a horizontal position?
How much work must be done to stop a 1500 kg car traveling at 80 km/h ? Express your answer using two significant figures. h ΚΑΙ ΑΣφ ? W = Submit Request Answer Provide Feedback <Assignment 6 Problem 7.38 Part A If it requires 55 J of work to stretch a particular spring by 1.8 cm from its equilibrium length, how much more work will be required to stretch it an additional 45 cm? Express your answer using two significant...
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...
I am pushing a shopping cart, causing it to accelerate at a rate of 0.18 m/s2. I would like to double my rate of acceleration. How much harder must I push? I am pushing a shopping cart, causing it to accelerate at a rate of 0.16 m/s2. If this shopping cart had more groceries in it, causing it to be twice as massive, how much more would it accelerate? A 9.8 kg object is moving at a constant speed of...