On February 15, 2013, a superbolide meteor (brighter than the Sun) entered Earth’s atmosphere over Chelyabinsk, Russia, and exploded at an altitude of 23.5 km. Eyewitnesses could feel the intense heat from the fireball, and the blast wave from the explosion blew out windows in buildings. The blast wave took approximately 2 minutes 30 seconds to reach ground level. (a) What was the average velocity of the blast wave? b) Compare this with the speed of sound, which is 343 m/s at sea level.

Q: Under which of the following conditions is the magnitude of the average velocity of a particle…

A: The expression to calculate the average speed of the particle is given by, Va=DT Here, D is the…

Q: bject has an initial velocity of 15 m/s and a constant acceleration of 4 m/s^2. How long will it…

A: From Newton's equation of motion we can write thatv=u+athereu=initial velocity=15 m/sv=final…

Q: The average acceleration is defined as (Choose the correct answer) O a. The displacement divided by…

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Q: An object has an initial velocity of 10 m/s and an acceleration of 3 m/s squared. How long will it…

A: The acceleration is defined as the rate of change of velocity.

Q: On average, an eye blink lasts about 100 ms. How far does a fighter jet travel during a pilot's…

A: Given data:  Time (t) = 100 ms = 0.100 s Average velocity (v) = 3300 km/h Required: Distance (d)

Q: In an experiment, a shearwater (a seabird) was taken from its nest, flown a distance 5040 km away,…

A: The average velocity is given by, vx,avg=ΔxΔt And, Δx=xf-xi Thus, vx,avg=xf-xiΔt

Q: Sasquatch, the most elusive resident of the great northwest, spends each night foraging for nuts,…

A: Given, x = 57 mile = 80467.2 m time  t = 24 hr = 86400 sec   We know the expression for average…

Q: A person walks 8 miles east and then walks 8 miles west from that point? What distance did he walk,…

A: A person walks 8 miles east and then walks 8 miles west from that point.

Q: A cart is given an initial velocity of 9.5 m/s and experiences a constant acceleration of 1.2 m/s?.…

A:

Q: An object is thrown straight upward with an initial velocity of 13.1 m/s. What's the object's…

A: The expression for the required displacement is,

Q: Two trains, one travelling at 20.8m/s and the other at 76.2 m/s, are headed toward one another along…

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Q: At a time t = 0 s, an object is observed at position x = 0 m. Its position along the x axis is…

A:

Q: An object is dropped from rest and takes 2.83 seconds to reach the ground below. From what distance…

A: Given Data: The initial velocity of an object is, u=0 m/s The time required to reach below the…

Q: An object's position as a function of time in one dimension is given by the expression; x(t) = 4.7t?…

A: Given data The object's position as a function of time is xt=4.7t2+6.29t+12.8. The instantaneous…

Q: The height of an object thrown upward with an initial velocity of 32 feet per second is given by the…

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Q: The height of an object thrown upward with an initial velocity of 96 feet per second is given by the…

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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: In an experiment, a shearwater (a seabird) was taken from its nest, flown a distance 5190 kmkm away,…

A: Given: time taken to come back aftert replease t=13.5day

Q: In reaching her destination, a backpacker walks with an average velocity of 1.18 m/s, due west. This…

A: Suppose x is the distance the backpacker moved with velocity 0.717m/s, then the total displacement…

Q: On average, an eye blink lasts about 100 ms. How far does a MiG-25 “Foxbat” fighter travel during a…

A:

Q: In an experiment, a shearwater (a seabird) was taken from its nest, flown 5150 km away, and…

A: The average velocity, vx,avg=∆x∆t=xf-xit2-t1   Substitute, vx,avg=0-5150 km13.5 days-0=-5150 km13.5…

Q: An object is dropped from rest and takes 2.25 seconds to reach the ground below. From what distance…

A: Given : vo = 0 (because object is dropped from rest) y = 0 (because finally the object reaches the…

Q: When the legal speed limit for the New York Thruway was increased from 55 mi/h to 65 mi/h, how much…

A: Given, Speeds are 55 mi/h and 65 mi/h Distance 700 km We know, 1 mile= 1.609 Km So, 55 mi/h= 88.5139…

Q: An objects position in the x-direction as a function of time is given by the expression: x(t)=5t^2 +…

A: The position of the object, x(t) = 5t2 + 2t The initial time, t1 = 1.15 s The final time, t2 = 2.07…

Q: The Shanghai maglev train connects Longyang Road to Pudong International Airport, a distance of 30…

A: Given The distance travelled by the maglev train is Δx = 30 km = 30 x 103 m. The time taken to cover…

Q: v sin 26, Q1) Show that R = for the range of a projectile on level ground by finding the time t at…

A:

Q: An object is dropped from rest and takes 2.41 seconds to reach the ground below. From what distance…

A: The height from which the object was dropped can be determined by the following kinematics equation.…

Q: 8 6 4 2 -4 -6 -8 0 1 2 3 4 5 6 7 8 clock reading (s) velocity (m/s)

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Q: An engineering physics student conducted an experiment on free fall motion by launching a toy rocket…

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Q: A soccer player kicks a rock horizontally off a 32 m high cliff into a pool of water. If the player…

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Q: The height of an object thrown upward from the roof of a building 408 ft. tall, with a initial…

A:

Q: A three-toed sloth is the slowest moving land mammal.  On the ground, the sloth moves at an average…

A: Given ,   average speed of sloth = 0.037 m/s   speed of tortoise = 0.076 m/s

Q: v sin 20, Q1) Show that R = for the range of a projectile on level ground by finding the time t at…

A:

Q: At t=0 an object starts from the origin and moves with a constant acceleration of…

A:

Q: During astronaut training, the person rides a simulated rocket, accelerating from rest to maximum…

A: X=16.34

Q: A collie moves from a coordinate of x=-2m, y= 3m, z=1m to a coordinate of x=5m,y=6m,z=3m in a time…

A: Given  Initial position P1 = (-2,3,1) m  Final position,P2 = (5,6,3) m  Time taken ,T = 2 sec

Q: A golf lesson lasts from 10:00 a.m. – 11:15 a.m. and includes a 15-minute break with equal lengths…

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Q: A well-thrown ball is caught in a well-padded mitt. If the acceleration of the ball is 2.10 × 104…

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Q: An object is dropped from rest and takes 2.42 seconds to reach the ground below. From what distance…

A:

Q: The height of a helicopter above the ground is given by y(t)=4.5t^(2), in meters. After 2.0 seconds…

A: Given : The height of the helicopter, h=4.5t2 m  The time is taken, t=2.0 s   Standard Data Used :…

Q: Answers: a) 4. In the 1991 World Track and Field Championships in Tokyo, Mike Powell jumped 8.95 m,…

A: As per guidelines, the question number 4 is answered and for the remaining questions to be solved…

Q: The height of a helicopter above the ground is given by h = 3.15t^3, where h is in meters and t is…

A: Finding the time taken by the mailbag to reach the ground.Given information:The expression of height…

Q: A helicopter is ascending vertically with a speed of 5.30 m/s. At a height of 107 m above the Earth,…

A: Speed of helicopter ascending vertically = 5.30 msHeight of helicopter above the ground = 107 m…

Q: The velocity of a rocket, in meters per second, t seconds after it was launched is modeled by…

A:

Q: The tangent of a position time graph would yield: The average velocity of an object b. The…

A: The position time graph shows that how far and object has travelled from its starting point at any…

Q: A shopper uses the 55-meter long walkalator that goes at 1.5 m/s from the meat section to the…

A: The expression to solve for the time taken is as follows: t=dv…

Q: A man went jogging one early morning.He started from his home and arrived at imelda park, 350 meter…

A: Given: Straight line distance between his home and imelda park, d = 350 m (time taken = 10 min  =…

Q: Which of the following is the correct conversion of initial velocity in base SI units? Refer to the…

A: The initial velocity of car u=0 The final velocity of car v= 60 mile/hr Again, 1 mile = 1.61 km =…

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –