Most important in an investigation of an airplane crash by the U.S. National Transportation Safety Board is the data stored on the airplane’s flight-data recorder, commonly called the “black box” in spite of its orange coloring and reflective tape.The recorder is engineered to withstand a crash with an average deceleration of magnitude 3400g during a time interval of 6.50 ms. In such a crash, if the recorder and airplane have zero speed at the end of that time interval, what is their speed at the beginning of the interval?

Q: A spacecraft starts from rest, and makes a journey to a destination 436000 km from its starting…

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Q: A spacecraft starts from rest, and makes a journey to a destination 447000 km from its starting…

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Q: object travels at a constant velocity of 10 m/s north in the time interval from t = 0 to t = 8 s.…

A: Displacement = velocity × time

Q: A body moving in the positive x-direction passes the origin at time t = 0. Between t = 0 and t = 1…

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Q: Approximately 0.1% of the bacteria in an adult human's intestines are Escherichia coli. These…

A: Given data: maximum speed vmax=15μm/s maximum acceleration amax=166μm/s2 Initial velocity u = 0…

Q: Answer the following

A: (a) The velocity of the particle is, v=dxdt                             ...... (1) The given…

Q: A rescue helicopter is hovering over a person whose boat has sunk. One of the rescuers throws a life…

A: Given data The initial velocity of the preserver is u = 1.8 m/s. The time interval is given as t =…

Q: Eg In a boat race, boat A is leading boat B by 50 m and both boats are traveling at a constant speed…

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Q: At t = 0, one toy car is set rolling on a straight track with initial position 13.0 cm, initial…

A: Given, Initial Position of car 1 (x1) = 13.0 cm Initial Position of car 2 (x2) = 9.5 cm Initial…

Q: A particle is moving with a velocity that varies with time given by vx(t) = a- Bt, where a = 5.00…

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Q: In an outing with your friends, you checked in to a hotel. Upon entering, you saw a spider running…

A: Explanation :- The spider is moving with a constant velocity so acceleration of the spider is zero.…

Q: A westbound car on the PA turnpike passes the exit for the northeast extension traveling at 16.2…

A: Let positive direction is in the east direction.

Q: A person takes a trip, driving with a constant speed of 89.5 km/h, except for a 22 minute rest stop.…

A: Given data: The speed of person is u=89.5 km/h. The time for rest is t’=22 min. The average speed…

Q: On a spacecraft two engines fire for a time of 567 s. One gives the craft an acceleration in the x…

A: Given: Timing of fire the engine (t) = 567 s. Acceleration of engine in direction x (ax) = 4.8 m/s2.…

Q: The velocity of a particle at any time t moving along an x-axis is given by the following equation:…

A: The first order derivative of position is velocity whereas the second order derivative of position…

Q: From January 26, 1977, to September 18, 1983, George Meegan of Great Britain walked from Ushuaia, at…

A: Basic Details The average velocity is the ratio of total distance covered to that of the total time…

Q: A train on a very long straight level stretch of tracks, starting from a dead stop, steadily speeds…

A: Case 1) initial speed = 0 msfinal speed (v) = 28 mstime taken (t) = 14 minutes = 14×60 seconds = 840…

Q: You are spending the summer interning as a technical advisor for the writers of a gangster movie…

A: constant velocity of bonie (v) = 108 km/hr acceleration of police car (a) = 2 m/s2Initial velocity…

Q: At an air show, a jet plane has velocity components vx= 695km/h and v  y =415km/h at time 4.35 s and…

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Q: Most important in an investigation of an airplane crash by the U.S. National Transportation Safety…

A: Acceleration (a) = - 3450 g where "g" is the acceleration due to gravity Time (t) = 6.49 ms Final…

Q: To qualify for the finals in a racing event, a race car must achieve an average speed of 250 km/h on…

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Q: ES-SS 18. The velocity and acceleration tables for a particle are shown on the right. Over what time…

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Q: A train is traveling down a straight track at 20 m/s when the engineer applies the brakes, resulting…

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Q: At the instant the traffic light turns green, a car starts with a constant acceleration of 1.76…

A: Given that, a =1.76 m/s2 u =0  (when the car start its initial velocity is zero) v =9.01 m/s

Q: What should a graph of the velocity vs time look like if it shows an object moving to the left at a…

A: Given data:  The object is moving to the left at a constant velocity

Q: In a boat race, boat A is leading boat B by 50 m and both boats are traveling at a constant speed of…

A: Given : Distance between boat A and boat B = 50 m Initial speed of boat A and boat B =va=vb 180 km/h…

Q: An object moves along the x-axis with an acceleration function of: a(t) = tā + 2 At t seconds. If…

A: Given: The acceleration (a(t)) is given as t1/2 + 2. Introduction: The acceleration (a) of an object…

Q: An object is moving along the x-axis. At t = 0 it is at x = 0. Its x-component of velocity vx as a…

A: Write the given values with suitable variables. vxt=αt-βt3α=7.6 m/s2β=4.4 m/s4x=0 Here, x denotes…

Q: A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a…

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Q: The velocity of a particle at any time t moving along an x-axis is given by the following equation:…

A: We know, Velocity is the first time derivative of position and acceleration is the double derivative…

Q: A driver, driving at a constant speed of 30m/s in a 50 mph zone, is unaware that he is being…

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Q: In a sprint tryout, an athlete runs a 100-meter dash in 10 seconds. If the athlete reaches the…

A: Given data: The total distance ran by the athlete, S=100 m. The time taken by the athlete to run…

Q: At an air show, a jet plane has velocity components v = 685 km/h and vy = 455 km/h at time 4.85 s…

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Q: The runway of an airport in Oman has been designed such that the lowest acceleration for a plane to…

A: Acceleration , a =   10.3 m/s Final velocity , v = 64.2 m/s To find = Length of the runway

Q: On a one lane road, a person driving a car at v1 = 58 mi/h suddenly notices a truck 1.1 mi in front…

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Q: The position coordinate of a particle which is confined to move along a straight line is given by "x…

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Q: For a standard production car, the highest road-tested acceleration ever reported occurred in 1993,…

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Q: A Cessna aircraft has a minimum speed of 135 km/h to take off, aka the lift-off speed. What minimum…

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Q: You are driving down a straight road at night in your McLaren MCL34 Formula 1 racecar at an entirely…

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Q: If a particle is traveling in the positive direction along an x axis while it slows, which of the…

A: Let velocity at time 't' be u Such that u>0 Since object is travelling in positive x direction…

Q: Starting from rest, the acceleration of particle, which is confined to move along a straight line,…

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Q: To qualify for the finals in a racing event, a race car must achieve an average speed of 250. km/h…

A: To qualify: Average speed = 250 km/h Total length = 1.60×103 km Time=Total lengthAverage…

Q: The body, with an initial speed of 2 m/s, began to slide along an inclined plane. For l0s, it passes…

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Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.