A woman drives a car from one city to another with different constant speeds along the trip. She drives at a speed of 70.0 km/h for 20.0 min, 65.0 km/h for 15.0 min, makes a stop for 50.0 min, then continues at 40.0 km/h for 30.0 min, at which point she reaches her destination. (a) What is the total distance between her starting point and destination (in km)? km (b) What is the average speed for the entire trip (in units of km/h)? km/h

Q: From the speed of 100 kph, a car decelerates at the rate of 15 m/min/sec along a straight road.…

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Q: A Man in a car starts from Paris and Travels 80 km at a constant speed of 80km/h, then stops for 30…

A: Given data: d1 = 80 km at speed (V1) = 80 km/h Rest time = 30 min = 0.5 h d2 = 200 km at speed (v2)…

Q: A pilot flies in a straight path for 1 h 30 min. She then makes a course correction, heading 10…

A: Explanation:- The entire journey of the pilot is as shown in the diagram. The pilot starts her…

Q: The velocity of a particle moving along the x axis is defined by v = x^4 + 2x^3 – 3x^2 where v is in…

A: GivenVelocity of partic along x-axisv=x4+2x3-3x2

Q: You are driving home from school steadily at 97 km/hkm/h for 160 kmkm . It then begins to rain and…

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Q: car moves on a straight road such that its position from a reference point is given by the following…

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Q: A man throws a ball upward with a speed of 10.0 m/s. If the initial position of the ball is 2.00 m…

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Q: An object with an initial speed of 12 m / s in the west direction is subjected to a constant…

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Q: For many years, the posted highway speed limit was 88.5 km/hr (55 mi/hr) but in recent years some…

A: Given data: Initial speed is, v1=88.5 km/h. New speed limit is, v2=104.6 km/h. Distance from…

Q: An unidentified flying object (UFO) is observed to travel a total distance of 29000 m, starting and…

A: Total distance travelled (D) = 29000 m Total time of trip (T) = 1.61 seconds Initial speed (u) = 0…

Q: A car starts a trip at mile marker 90 at 2:00 PM. At 5:00 PM, the trip concludes with the car at…

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Q: A pilot flies in a straight path for 1 h 30 min. She then makes a course correction, heading 11…

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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: An object moves along the positive x-axis with a speed of V1 =9 m/s for 2 seconds, then moves along…

A: Average speed = (Total distance)/(Total time) Distance d1 = speed * time = 9*2 = 18 m Distance d2 =…

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: Two cars leave from an intersection at the same time. Car A travels south at 80 km/h, while car B…

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Q: In a boat race, boat A is leading boat 8 by 50 m and both boats are traveling at a constant speed of…

A: Solution: Boats A and B are in race. Boat A is ahead of boat B. Initially they have same speed u.…

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

A: GivenDistance travelled by motorist (D)= 450 kmwe know 1km=0.621371 milesD=450×0.621371…

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: Starting from rest, a bus leaves a gas station with a constant acceleration of 2 m/s˄2 until it…

A: We will split the problem into three parts and then solve for the traveled distance.

Q: In reaching her destination, a backpacker walks with an average velocity of 1.14 m/s, due west. This…

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Q: Rob drove to the nearest hospital with an average speed of v m/s in t seconds. If he drives home on…

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Q: A motorist drives 100 km from one city to another in 2.80 h but makes the return trip in only 2.00…

A: The average speed of the total trip can be expressed as,

Q: The polar bear is an excellent swimmer, and it spends a large part of its time in the water. Suppose…

A: The kinematic equation to solve for the initial velocity of the polar bear is as follows:…

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

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Q: 7. A man walks in a straight path from point 1 to point 2 in 3.0 hours and returned to point 1 in…

A: Given data:  Distance between point 1 and 2 (d) = 200 m Time taken to go from point 1 to point 2 t1…

Q: A car travels at an average speed of 61.061.0 km/h for 1.001.00 h and then at an average speed of…

A: Average speed for first hour = 61 km/hr Average speed during second hour = 42 km/hr

Q: You normally drive on the freeway between San Diego and Los Angeles at an average speed of 105 km/h…

A: SOlution: Given that v1 = 105 km/h t1 = 1 h 50 min v2 = 71 km/h

Q: A super ball dropped from rest falls 2 meters vertically downward and rebounds 2 meters upward in a…

A: The ratio of the total distance to the total time taken is the average speed.  The ratio of the…

Q: George, the absent-minded professor, drives his car 5.0 miles due east along a straight road to the…

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Q: A student walks 1.0 mi west and then 1.0 mi north. Afterward, how far is she from her starting…

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Q: During 55 successive 1.001.00 min intervals, a runner moves at the following constant speeds:…

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Q: An unidentified flying object (UFO) is observed to travel a total distance of 49000 m, starting and…

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Q: A typical jetliner lands at a speed of 160 miles / hr and decelerates at a rate of 10 miles / hr /…

A: We need to calculate the total displacement of the plane between touchdown on the runway and coming…

Q: A bicycle travels 3.2 in due east in 0.10 h, then 4.8 km at 15.0 degree east of north in 0.15 h,…

A: x componentax=3.2+4.8 sin 15°+32=7.64 kmy componentay=0+4.8 cos 15°+0=4.636 kmMagnitude of net…

Q: A car travels along a straight line. Its distance, x, from a reference point as a function of time,…

A: x(t)=αt2-βtα=1.50 m/s2β=0.00500m/s3t1 and t2 are the time corresponds to initial and final position…

Q: A car starts from rest and reaches a speed of 48 m/s in 15 sec. The acceleration increases from zero…

A: Given: At t = 0 sec, v = 0 m/sec At t = 15 sec, v = 48 m/sec Constantly increasing acceleration for…

Q: If a train can accelerate at 0.10 m/s˄2, how far must it travel to increase its speed from 1.0 m/s…

A: Given: Acceleration of train, a = 0.1 m/s2 When velocity increased, final velocity, v = 6 m/s…

Q: The driver of a car travels 150 miles to reach his destination. If he travels 60.0 mi/h for 100…

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Q: I need help on P2.19.

A: The required time is,

Q: A motorist travels for 2h at 70 km/h and 1h at 100 km/h. What is her average speed for the trip? O…

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Q: The polar bear is an excellent swimmer, and it spends a large part of its time in the water.Suppose…

A: Given data The deceleration of the polar bear is: a = - 0.0122 m/s2 The distance traveled by the…

Q: In an 8.00 kmkm race, one runner runs at a steady 11.2 km/hkm/h and another runs at 14.9 km/hkm/h.…

A: Time required for the second runner to finish the race. t2=dv2=8.00 km14.9 km/h=0.537 h

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

A:

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: A student walks 1.0 mi west and then 1.0 mi north. Afterward, how far is she from her starting…

A: The position of the student is drawn below.

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 –