Problem 7: Near the end of a marathon race, the first two runners are separated by a distance of 47.2 m. The front runner has a velocity of 3.15 m/s, and the second a velocity of 4.95 m/s. Part (a) What is the velocity of the second runner relative to the first, in meters per second? Numeric : A numeric value is expected and not an expression. VS-F Part (b) How many seconds earlier will the second runner reach the finish line if the front runner is 250 m from the finish line in seconds? Numeric : A numeric value is expected and not an expression. 'F-s = Part (c) What distance ahead, in meters, will the second runner be when she crosses the finish line? Numeric : A numeric value is expected and not an expression.

Q: A squirrel has x- and y-coordinates (1.1 m, 3.4 m) at time t, = 0 and coordinates (5.3 m, -0.5 m) at…

A: Given: The initial coordinate of the squirrel is (1.1 m, 3.4 m). The time is t1=0. The final…

Q: A squirrel has x- and y- coordinates (-2.0 m, 4.2 m) at time t = 0 and coordinates (4.4 m, -1.8 m)…

A: Given Coordinates at t=0 sec are (-2.0 m, 4.2 m) Coordinates at t=4 sec are (4.4 m, -1.8 m)

Q: In the 1968 Olympics in Mexico City, Bob Beamon shattered the record for the long jump with a jump…

A: Given : Range (R) = 8.90 m Initial speed (vo) = 9.5 m/s

Q: The velocity of a particle is given by v = {16t²i + 4t³j + (5t +2)k}m/s, where t is in seconds. If…

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: A suspicious-looking man runs as fast as he can along a moving sidewalk from one end to the other,…

A: Given:  time to go, t = 2.5 s  time to come back, t' = 0 s

Q: The velocity of an object is given by the expression v(t) = 3.00 m/s + (3.00 m/s3)t 2, where t is in…

A: Given:velocity of an object is given by the expression v(t) = 3.00 m/s + (3.00 m/s3)t2  located at x…

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: 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: A particle is thrown into air at the origin with initial velocity v = Ai + Bj where A and B are…

A:

Q: A man is lost in a thick forest. Confused and clueless as to what direction to take, he walks a…

A: The net displacement should be zero. A+B+C=0 C=-(A+B) A=5cos25i+5sin25j=4.53i+2.11j…

Q: An object is thrown straight upward with an initial velocity of 13.3 m/s. What is the object's…

A: Initial upward velocity of an object (u) = 13.3 msFinal velocity at the maximum height (v) = 0 msg =…

Q: A person takes a trip, driving with a constant speed of 89.5 km/h, except for a 22 minute rest stop.…

A: Given data: The speed of person is u=89.5 km/h. The time for rest is t’=22 min. The average speed…

Q: Suppose a particle has velocity given by v(t) = sin(t). What is the net displacement of the particle…

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

A: Magnitude of average velocity less than average speed

Q: The height of a helicopter above the ground is given by h = 2.90t3, where h is in meters and t is in…

A: Given: The height of a helicopter above the ground is given by h = 2.90t3 , where h is in meters and…

Q: Starting at time t= 0, an object starts moving along a straight line. Its coordinate in meters is…

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Q: A particle is moving upward to the right along the path y = x² + 26 where x and y are in meters. The…

A: Given y = x2 + 26 x = t2-t+4

Q: (4) average velocity of the particle is half its final velocity (17. The displacement of a particle…

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Q: The basketball passed through the hoop even though it barely cleared the hands of the player B who…

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

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Q: The position of a cat running from a dog down a dark alley is given by the values of the table. ?t…

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Q: Most important in an investigation of an airplane crash by the U.S. National Transportation Safety…

A: Given information: Here, a is the black box’s deceleration, t is the time interval and vf is the…

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

A:

Q: Answer the ff: 1. A juggler throws a bowling pin straight up with an initialspeed of 8.20 m/s.…

A: 1) At maximum height, the bowling pin comes to rest for an instant. So, the velocity of the bowling…

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: The initial velocity of the bob is found to be 65 cm/s. If there are 31 dots on the ticker tape, how…

A: We know that ticker tape ticks 60 times in a second. Hence, 60 dots represent 1 second. Lets have…

Q: A particle moves from an initial position with coordinates x = -2.0 m, y = +3.0 m, to a final…

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Q: An inquisitive physics student and mountain climber climbs a 51.0-m-high cliff that overhangs a calm…

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Q: In 1889, at Jubbulpore, India, a tug-of-war was finally won after 2 h 41 min, with the winning team…

A: Average velocity = (total displacement)/(time) Given , Time t = 2 h 41 min = 161 minutes…

Q: need help

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Q: On a one lane road, a person driving a car at v1 = 58 mi/h suddenly notices a truck 1.1 mi in front…

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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: The height of a projectile fired straight up in the air with an initial velocity of 64 ft/s is h =…

A: Given :          Initial velocity , u=64 ftS          height , h=64t-16t2

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

A:

Q: An athlete sprints in a straight line for 50.0 m in 8.00 s, and then walks slowly back to the…

A: a) The required average sprint velocity is, b) The required average walking velocity is,

Q: On a one lane road, a person driving a car at v1 = 54 mi/h suddenly notices a truck 0.65 mi in front…

A: Velocity of the car (v1)=54 mph Distance between truck and car (d)=0.65 mi Velocity of the truck…

Q: IXFQP A police car traveling 95.0 km/h is traveling west, chasing a motorist traveling at 80.0 km/h.…

A: The formula for speed is speed = distance ÷ time. To work out what the units are for speed, you need…

Q: h =-16t + Vot + ho

A: Given that The position function is h = -16t2 + v0t + h0

Q: A marching band player walks directly north at a speed of 2.50 m/s for a time of 12.0 seconds, turns…

A: Solution: Given that: band player walks directly north at a speed of 2.50 m/s for a time of 12.0…

Q: How to solve for the initial velocity in the y direction (viy) and initial velocity in the x…

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Q: A ball has coordinates x = t2 – 3t + 20 and y = 2 + 3t given in inches, wheret is in seconds. Find…

A: The components of velocity and the position are related as vx = dxdt vy = dydt The components of…

Q: On a day when the wind is blowing toward the south at 5 m/s , a runner logs west at 1.6 m/s.what is…

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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 =…

Scalars and Vectors

Scalars and Vectors are the classification of physical quantities that are used to denote various terms in physics.