A 747 airliner reaches its takeoff speed of 152 mi/h in 35.5 s.

Q: A train travels a distance of 300 m at a constant acceleration. If it starts from rest, what is its…

A: Given: The distance covered is 300 m. The time duration is 20 s.

Q: The speed of a car increases from 20 m/s to 80 m/s during 3 seconds . The acceleration of the car…

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Q: If a seagull drops a shell from rest at a height of 14 m, how fast is the shell moving when it hits…

A: Seagull drops a shell from rest ,  means initial velocity ( u ) = 0 Drops from height ( h ) = 14 m…

Q: A car travels at 25m/s for 3 minutes. How far does it travel?

A: Given data :          Time = T       Speed = S     To find :             Distance

Q: A car traveling at 3.0 m/s has a constant acceleration of 4.0 m/s in the same direction as the…

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Q: Which has a greater speed, a velocity of +5 m/s or a velocity of −10 m/s

A: We need to compare the velocity

Q: A truck covers 40.0 m in 8.95 s while smoothly slowing down to final speed of 1.60 m/s.

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Q: A bullet moving at a speed of 158 m/s passes through a plank of wood at 141 m/s.  Another bullet…

A: Given that - Initial velocity of the first bullet Final velocity of the first bullet Initial…

Q: A spacecraft has an acceleration of 5g. What  distance is  needed for it to attain the speed of…

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Q: A man throws a ball vertically upward from the window of a building with a speed of 15 m/s.

A: The expression from kinematics,

Q: How fast is a dropped object moving after it falls for 4 s?

A: Given data:  Initial velocity (u) = 0 m/s Time (t) = 4 s  Required: Final velocity (v)

Q: A truck covers 40 m in 8.50 seconds while smoothly slowing down to a final speed of 2.50 m/s. Find…

A: The final speed =2.50m/s To find its acceleration

Q: What is the velocity of a plane that traveled from 562 miles from Detroit to Mackinaw City in…

A: Since we are authorized to answer only one question in a single request I am answering first…

Q: If a race car travels once around the track covering 12 km in 3 minutes, the velocity is   (a) 0…

A: The velocity of a body is given as its displacement per unit time.

Q: During takeoff, an airplane goes from 0 to 42 m/s is 5 s. How far is it going after 4 s. calculate…

A: Given, The initial velocity of the airplane = 0 m/s The final velocity of the airplane = 42 m/s Time…

Q: A car traveling north with a velocity of 20 m/s slows down to 10 m/s in 10s. What is the car’s…

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Q: A jogger runs 10 km in 45 minutes, rests for 10 minutes, and then runs another 8 km in 1 hour. The…

A: Given Data :               Distance traveled by jogger in first 45 minutes (d1) = 10 km = 10×103 m…

Q: A jet airplane reaches  693./kmh on a certain flight. What distance does it cover in 5.0min?

A: Given  Speed = 693 km/h Time = 5 min = 5/60 = 1/12 hours

Q: 6. A car moving at 65 mi/h South then 50 mi/h east.

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Q: A truck covers 40.0 m in 7.95 s while uniformly slowing down to a final velocity of 1.80 m/s.

A: Given Data : The distance covered by the truck is given as  = 40m. The time taken to travel distance…

Q: A car has an initial velocity of 10 m/s and it covers a distance of 225 metres in 10 seconds. Find…

A: Given: The intial velocity of the car is 10 m/s. The distance traveled by car is 225 m. The time…

Q: 1110 km, 10- hour flight was travelled at 2 speeds. For the first part of the trip. The average…

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Q: A bullet moving at a speed of 151 m/s passes through a plank of wood at 145 m/s. Another bullet…

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Q: An object is dropped from rest and impacts the ground with a velocity of 8.7 m/s. What height was it…

A: Given data: The initial velocity of the object (u) = 0 m/s Final velocity of the object when it…

Q: A car travels 60 miles in 50 minutes. Calculate the average speed of the car in mph.

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Q: a car slows down from  45 m/s to 13m/s in 4 s. What is the acceleration.

A: Given that a car slows down from  45 m/s to 13m/s in 4 sec i.e.initial velocity V1 =45 m/secfinal…

Q: car’s acceleration

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Q: A car travels a distance of 100 km in 2.00 hours. It then travels an additional distance of 60.0 km…

A: Given data:  Distance (d1) = 100 km Time (t) = 2.00 h Additional distance (d2) = 60.0 km Time (t) =…

Q: A boy travels with a speed of 10 ms

A: Given Speed of boy=10 ms-1Time Taken=30 min

Q: The acceleration of a ball as it rolls down a ramp is 4 m/s2. The ball is referred to 2 s after it…

A: Answer is Option (e) Using kinematic equation, the expression for find velocity is v=u+at Substitute…

Q: A car moving at 60 km/h comes to a stop in 10 s when the driver slams on the brakes. in this…

A: Given data:  Initial speed (Vi) = 60 km/h Final speed (Vf) = 0, car has stopped Time (t) = 10 s

Q: What force is required to accelerate an object having a mass of 6 kg at 9 m/s?

A: Introduction :  In this question we are provided it value of mass and acceleration . With these data…

Q: A red truck is moving at a constant speed and covered a distance of 95m in 7.0 seconds. It stopped…

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Q: A bullet moving at a speed of 158 m/s passes through a plank of wood at 142 m/s. Another bullet…

A:

Q: A truck accelerates from the speed of 5.5 M/S to 8.0 M/S in 7.5 seconds. What is the average rate of…

A: The average acceleration can be given by aavg=∆v∆t

Q: What must your car’s average speed be in order to travel 235 km in 2.75 h?

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Q: A 510 kg elevator accelerates upward at 1.5 m/s? for the first 11 m of its motion.

A: solution is given as

Q: If a cheetah can reach his top speed of 93 km/h in just 3 seconds from rest, what is its…

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Q: A car of mass 6000 kg moving at 40 m/s is suddenly brought to a stop when a deer crosses the road.…

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Q: An object thrown directly upward is accelerated Only as it falls Only at the…

A: An object thrown directly upward is accelerated throughout its journey as the the object will be…

Q: An object starts from rest and accelerates uniformly. If it moves 3 m during the first second, then,…

A:

Q: Without turning around, a dog walks along a long straight path for 4.0 m at 3.0 m/s and then for 2.0…

A: Given data: Case 1: Speed (v1) = 3 m/s Distance (d1) = 4.0 m Case 2: Speed (v2) = 6 m/s Time(t2)= 2…

Q: If a car is traveling at 25 m/s, how far does it travel in 1.0 hour?

A: Relation between speed, time and distance is -  Must follow below points for unit of the quantity -…

Q: If a trolley starts from rest with an acceleration of 2 m/s, the velocity of the body after 4 s…

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Q: A ball is thrown straight up into the air. Just before hitting the ground does the acceleration…

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Q: A ball is dropped from a bridge and strikes the water in 2.4 seconds. How fast is it moving when it…

A:

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.