7) A car moving at 70.0 km/h mects a train of length 1.10 km moving at...
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...
An automobile traveling 95 km/h overtakes a 1.80 km -long train traveling in the same direction on a track parallel to the road. Part A If the train's speed is 75 km/h, how long does it take the car to pass it? Part B How far will the car have traveled in this time? Part C How long does it take the car to pass the train if the car and train are traveling in opposite directions? Part D How...
A train leaves Barrington station travelling west at 90 km/h. 75 minutes later another train departs the same station travelling on a parallel track at 120 km/h. With clear explanations, diagrams and calculations: (a) At what distance will the slower train be accelerated? (b) How long will it take for the faster train to reach the slower train? (c) At what distance will the faster train reach the slower train? (d) draw diagrame
Two cars are traveling along a straight road. Car (A) maintains a constant speed of 70.0 km/h; car (B) maintains a constant speed of 106 km/h. At t = 0, car (B) is 36.0 km behind car A. How far will car (A) travel from t = 0 before it is overtaken by car (B)?
When a high-speed passenger train traveling at vP = 158 km/h rounds a bend, the engineer is shocked to see that a locomotive has improperly entered onto the track from a siding and is a distance D = 692 m ahead (see the figure). The locomotive is moving at vL = 30 km/h. The engineer of the passenger train immediately applies the brakes. Assume that an x axis extends in the direction of motion. What must be the constant acceleration...
A police car sounding a siren with a frequency of 1640 Hz is traveling at 110 km/h . A What frequencies does an observer standing next to the road hear as the car approaches and as it recedes? B) What frequencies are heard in a car traveling at 90.0 km/h in the opposite direction before and after passing the police car? C) The police car passes a car traveling in the same direction at 80.0 km/h. What two frequencies are...
A mini train is moving at a constant speed along a straight, horizontal track. The train consists of an engine, which is in front, and one car that is being towed by the engine by a cable. The engine and car are not touching. There is a coefficient of kinetic friction of between the engine and the track, and between the car and the track. The coefficient is the same for both; it is 0.100. The engine has a mass...
A police car sounding a siren with a frequency of 1280 Hz is traveling at 110.0 km/s. a) What frequencies does an observer standing next to the road hear as the car approaches and as it recedes? b) What frequencies are heard in a car traveling at 110.0 km/h in the opposite direction before and after passing the police car? c) The police car passes a car traveling in the same direction at 90.00 km/h. What two frequencies before and...
A car moving with a constant speed of 85 km/h enters a circular, flat curve with a radius of curvature of 0.40 km. If the friction between the road and the car’s tires can support a centripetal acceleration of 1.25 m/s2, without slipping, does the car navigate the curve safely, or does it fly off the road?
An automobile traveling at 70.0 km/h has tires of 50.0 cm diameter. (a) What is the angular speed of the tires about their axles? rad/s (b) If the car is brought to a stop uniformly in 40.0 complete turns of the tires (without skidding), what is the magnitude of the angular acceleration of the wheels? rad/s2 (c) How far does the car move during the braking? m