Jean runs 6 mi and then rides 24 mi on her bicycle in a biathlon. She rides 8 mph faster than she runs. If the total time for her to complete the race is 2.25 hr, determine her average speed running and her average speed riding her bicycle.

Q: The 1992 world speed record for a bicycle (human-powered vehicule) was set by Chris Huber. His time…

A: Time taken by Chris Huber in 1992 to cover 200 m stretch = 6.509 seconds Using formula, Speed×time =…

Q: A student drives the 105-mi trip back to campus after spring break and travels with an average speed…

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Q: A rocket-powered sled moves along a track, eventually reaching a top speed of 209 m/s to the east.…

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Q: June walks for 15 minutes at 0.165 km/ min but then she remembers she is suppose to meet her friend…

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Q: A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 km east, and then returns…

A: Let the north pole be origin. The distance travelled by the bearcan be represented as:

Q: A rocket-powered sled moves along the track, eventually reaching a top speed of 230 m/s to the west.…

A: Given:-             Speed u =  230 m/s.    Final speed v = 0 m/s         Time taken t = 4.42 s…

Q: A group of college students eager to get to Florida on a spring break drove the 820-mi trip with…

A: Average speed is the ratio of the total distance covered  to the total time taken to cover the…

Q: A rocket-powered sled accelerates from rest. After = 10 s it has traveled a distance x = 400 m. What…

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Q: Three people are walking. The first person walks at a slow pace, the next walks at a medium pace,…

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Q: A car company claims that its car can accelerate at 1.4 m/s2. If the car starts from rest how long…

A: Given- Acceleration of car(a)=1.4m/s2Final Velocity(v)= 28m/sInitial Velocity(u)=0m/s

Q: Sam crossed the finish line of a 100m race with a speed of 10.44m/s. If it took him an additional…

A: The total distance of the race, d0 = 100 m Sam's speed at the finish line, v0 = 10.44 m/s The time…

Q: An object on a number line moved from x = 12 m to x = 124 m andmoved back to x = 98 m. The time…

A: Given,  Initial position of the object = X1 = 12 m Then the object moved to position 2, X2 = 124 m…

Q: 2.25a is a graph of velocity versus time for a car. Sketch a graph of the car’s acceleration versus…

A: The acceleration is Hence slope of velocity time graph is acceleration of the car.

Q: person jogs eight complete laps around a 400-m track in a total time of 15.1 min.

A: time =15.1 min =15.1×60 sec=906 s

Q: Ms. Gordon drives to the store to get some milk. She travels at a constant speed of 30.0 mph on her…

A: The equation for the average velocity is given by, v→avg=vi→+vf→2 Here, vi→ is the initial velocity…

Q: A horse is running across a field. The horse accelerates at 2.00 m/s2 over a distance of 6.70 m. It…

A: Given data:Here, a is the acceleration, S is the distance, and v is the final speed.

Q: Two physics professors challenge each other to a 100. m race across the football field. The loser…

A: Write the time taken by the Dr. Rice. tRice=10.40 s   Calculate the time taken by Dr. De La Paz to…

Q: A car is traveling at an initial speed of 20 m/s and slows to rest with an acceleration of -5.0 m/s.…

A: The initial speed of the car,(u)=20 m/sec -----(1) [Given] Acceleration of the car,(a)=(-)5 m/sec2…

Q: A ball is dropped from a height of 90 m on a floor. At each collision with the floor, the ball loses…

A: Let the height from which the ball is initially dropped be denoted by h1.Use the third kinematic…

Q: A race car is one lap behind the lead race car when the lead car has 47 laps to go in a race. If…

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Q: The record time for a 1/4 mile drag race is  4.428 sec with a final speed of 152 m/s (336 mph).…

A: It is given that

Q: Richard is driving home to visit his parents. 125 mi of the trip are on the interstate highway where…

A:

Q: In September 1988 in Seoul, Carl Lewis set a new world record by running 100 m in 9.92 s. What was…

A: Given: Total distance travelled d=100m Total time taken t=9.92s To find: Average speed v=??

Q: Problem 4: In a biathalon race you first ride a bicycle at an average speed of 19.8 mi/h for 19…

A: Please see the answer below

Q: A rocket-powered sled moves along a track, eventually reaching a top speed of 247 m/s to the west.…

A: This question is based on Motion in a straight line topic. We need to use equations of motion to…

Q: A car accelerates from rest for 5 seconds at 8 mi/hr/s, heading west. It then continues without…

A: Since the car accelerates from the rest, the initial velocity of the car will be zero.

Q: The cheetah is considered the fastest running animal in the world. Cheetahs can accelerate to a…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Your favorite car goes zero to 60.0 mph in 5.00 seconds. Assuming it accelerates uniformly, sketch a…

A: Assume car to be travelling in straight line. Let u be the car’s initial velocity, v be the car’s…

Q: The velocity as a function of time for a world-class track sprinter in a 100 m race is shown in the…

A:

Q: Cheetahs can accelerate to a speed of 20.2 m/s in 2.65 s and can continue to accelerate to reach…

A: The initial speed of the cheetah is zero. The speed the cheetah reaches in 2.65 s is 20.2 m/s. The…

Q: a person walks for 1.00 hr at a speed of 2.00 mi/hr. he stops for 1.00 hr. he then starts walking…

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Q: Construction work in the city means you have to drive at a steady 23 km/h. Once past this zone, you…

A: Given value--- initial speed = 23 km/h. past this zone, you speed up to 56 km/h in 10 s. We have…

Q: An athlete wants to run a 1500m race with an average velocity of 6.00 m/s. After running the first…

A: The speed of the athlete in the first 500 m is,

Q: car starts from rest and accelerates to a speed of 60 mi/h in 20 s.  The acceleration during this…

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Q: Bob is cruising leisurely on his bike at 2.4 m/s when Jim passes him, traveling at a constant 10.2…

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Q: A high-performance sports car can go from 0 to 100 mph (44.7 m/s) in 7.9s.  a) What is the car's…

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Q: you walk from your house to a local coffee shop to get an espresso. You average  a speed of 2.4 m/s…

A: Average speed = total distance travelled /total time taken

Q: Bob is cruising leisurely on his bike at 2 m/s when Jim passe immediately begins accelerating at 2.2…

A:

Q: In a 5000 m race, the athletes run 12(1)/(2) laps; each lap is 400 m. Kara runs the race at a…

A: Given The total distance covered in the race is D = 5000 m. The distance for each lap, x = 400 m.…

Q: A student drives 40 km south in an attempt to get to a science fair competition before realizing he…

A: Given : Distance traveled south = 40 km Distance traveled back north = 15 km Total distance traveled…