A car travels 2.00 km at an average speed of 72.0 km and then 2.00 km at an average speed of 39.0 km/h. What is the car‘s average speed during the entire 4.00 km interval?
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Q: A speedboat heads west along a river at 250 km/h and encounters a current with a velocity of 150…
A: Solution: Given: u = speed of speedboat (to West) = 250 km/h v = speed of current in polar…
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Q: You normally drive on the freeway between Tayasan and Bayawan City at an average speed of 105 km/h,…
A: Average speed = 105 km/h time, t = 2 h 20 min Second day: average speed, v = 74.5 km/h
Q: At a certain time a particle had a speed of 41 m/s in the positive x direction, and 6.5 s later its…
A: v1=41 m/st1=0 sv2=-80 m/st2=6.5 s average acceleration,a=v2-v1t2-t2
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Q: A motorist travels for 2h at 70 km/h and 1h at 100 km/h. What is her average speed for the trip? *
A: The initial speed, u=70 km/h The initial time taken, t1=2 h The final speed, v=100 km/h The…
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A: Given data : Time=t Average speed=S Required : Distance
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Q: The Shanghai maglev train connects Longyang Road to Pudong International Airport, a distance of 30…
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Q: A motorist travels for 2 h at 80 km/h and 2 h at 100 km/h. What is her average speed for the trip? *
A: A motorist travels for 2 h at 80 km/h and 2 h at 100 km/h. What is her average speed for the trip?
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Q: What must be the average speed to travel 250 km in 2 hr? And in m / s?
A: Introduction: In physics, many of the physical quantity, came across in day to day life. Speed is…
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Q: A student walks 2 km in 30 minutes. What is the student's average speed in km/hr?
A: Given data: Distance (d) = 2 km Time (t) = 30 minutes Required: Average speed in km/hr
Q: A train starting from a railway station and moving with uniform acceleration attains a speed 40 km h…
A: Write the given values with the suitable variables. u=0 m/sv=40 km/hr=40×10003600 m/s=11.11 m/st=10…
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A: Average speed for first hour = 61 km/hr Average speed during second hour = 42 km/hr
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Q: A train makes a round trip on a straight, level track. The first half of the trip is 300km and is…
A: Given:For first half of the tripDistance covered by train s1 = 300 kmSpeed of the train v1 = 75 km/h…
Q: An airplane travels at 300 mi/h south for 2.00 h and then at 250 mi/h north for 750 miles. What is…
A: Given data: Airplane travels v1 = 300 mi/h for t1 = 2.00 h, in South direction v2 = 250 mi/h for…
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Q: A car moves at (30km/h) for 30 min and at (60 km/h) for 1 hour Find the average velocity and the…
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Q: The electric train in Addis Ababa is designed to operate at à limiting acceleration and declaration…
A: Answer 42.4096 second
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Q: A train 400 m long is moving on a straight track with a speed of 82.4 km/h. The engineer applies the…
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Q: A train makes a round trip on a straight, level track. The first of the trip is 300km and is…
A: Given that for the first trip the train travels 300km with a speed of 75km/h, after 0.50h the train…
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Q: On an Interstate highway in a rural region of wyoming, a car travelling at a speed of 38.0 m/s. Is…
A: Given: Speed of car = 38 m/s Exceeding limit = 75 mi/h
Q: A train 350 m long is moving on a straight track with a speed of 80.1 km/h. The engineer applies the…
A: Given Length of train, L = 350 m Initial speed, Vi = 80.1 km /h = 22.25 m/s Final speed, Vf =…
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- A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 50.0 min at 85.0 km/h, 7.0 min at 60.0 km/h, and 45.0 min at 55.0 km/h and spends 25.0 min eating lunch and buying gas. (a) Determine the average speed for the trip. km/h (b) Determine the distance between the initial and final cities along the route. kmAn object moves along the x axis according to the equation x = 3.85t? 2.00t + 3.00, where x is in meters and t is in seconds. (a) Determine the average speed between t = 2.10 s and t = 4.10 s. 13 The average speed is the distance traveled divided by the time. Is the distance traveled equal to the displacement in this case? m/s (b) Determine the instantaneous speed at t = 2.10 s. m/s Determine the instantaneous speed at t = 4.10 s. m/s (c) Determine the average acceleration between t = 2.10 s and t = 4.10 s. m/s² (d) Determine the instantaneous acceleration at t = 2.10 s. m/s² Determine the instantaneous acceleration at t = 4.10 s. m/s? (e) At what time is the object at rest? SA person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 40.0 min at 85.0 km/h, 15.0 min at 100.0 km/h, and 55.0 min at 45.0 km/h and spends 20.0 min eating lunch and buying gas. (a) Determine the average speed for the trip. km/h(b) Determine the distance between the initial and final cities along the route. km
- Laptions Index Table of Authorities 2. A stone is thrown vertically upwards from the top of a building 50m tall with an initial velocity of 20.0ms. if the stone just misses the edge of theroof on its return, determine a) The time taken by the stone to get to its maximum height b) The maximum height reached by the stone c) The time at which the stone return to the point where it was thrown d) The velocity of the stone at this instance e) The velocity and position of the stone at t=5 sA person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 30.0 min at 50.0 km/h, 12.0 min at 60.0 km/h, and 30.0 min at 40.0km/h and spends 55.0 min eating lunch and buying gas. (a) Determine the average speed for the trip.km/h(b) Determine the distance between the initial and final cities along the route. kma man walks south at a speed of 2.00m / s for 15.0 minutes. then he turns and walks north at a distance of 2000m in 15.00 minutes. What is the average speed of the man during his entire movement?
- The acceleration of a particle is defined by the relation a= -kx² where a in m/s², X in meters. the particle starts with no initial velocity at x = 12 m₂, und its velocity is 8 m/sec when X=6m. Determine the value of k [324 m³/s²] ✰ 16 the velocity of the particle when X=3m [13.26 mA person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 20.0 min at 65.0 km/h, 15.0 min at 75.0 km/h, and 45.0 min at 35.0 km/h and spends 30.0 min eating lunch and buying gas. (a) Determine the average speed for the trip. (b) Determine the distance between the initial and final cities along the route.A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 60.0 min at 95.0 km/h, 14.0 min at 100.0 km/h, and 60.0 min at 50.0km/h and spends 25.0 min eating lunch and buying gas. (a) Determine the average speed for the trip. (b) Determine the distance between the initial and final cities along the route.
- A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 15.0 min at 60.0 km/h, 16.0 min at 80.0 km/h, and 50.0 min at 45.0 km/h and spends 35.0 min eating lunch and buying gas. (a) Determine the average speed for the trip. km/h (b) Determine the distance between the Initial and final cities along the route. km Need Help? Read I Need Help? MY NOTES ASK YOUR TEACHER A football player runs from his own goal line to the opposing team's goal line, returning to his thirty-yard line, all in 22.Is. Calculate his average speed and the magnitude of his average velocity. (Enter your answers in yards/s.) HINT (a) Calculate his average speed. yards/s (b) Calculate the magnitude of his average velocity. yards/sChapter 4- questn-30 The velocity of a particle moving in the xy plane is defined by i = (6.0t – 4.0t?)î + 8.0j (m/s), when the acceleration is zero. Option 1 Option 2 Option 3 Option 4 Option 5 0.75s 1.75s 2.75s 3.75s 4.75sA person on a road trip drives a car at different constant speeds over several legs of the trip. She drives for 15.0 min at 50.0 km/h, 8.0 min at 80.0 km/h, and 30.0 min at 35.0 km/h and spends 25.0 min eating lunch and buying gas. (a) What is the total distance traveled over the entire trip (in km)? km (b) What is the average speed for the entire trip (in km/h)? km/h