A swimmer completes the first 50 m of the 100-m free style in 37.8 s. On reaching the far side of the pool, she turns around and swims back to the start in 42.2 s. The average speed of the swimmer is

Q: A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along…

A: in first case time = t1=27.6 min = 27.6 x 60 =1656 sec                        speed = V1= 5.96 m/s…

Q: A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along…

A: Given data: The average speed v1=8.26 m/s The average speed v2=4.00 m/s The average speed v3=19.1…

Q: In a 5000 m race, the athletes run 1212 laps; each lap is 400 m. Kara runs the race at a constant…

A: The total distance of the race, D=5000mEach lap distance = 400 mKara runs the race at a constant…

Q: A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along…

A: Given that: During first part of trip: time = 27.8 minutes= 27.8 X 60 = 1668 sec Average speed =…

Q: A ball is thrown up in the air with an initial velocity of 43.6 m/s upward. How long does it take…

A:

Q: constant acceleration as it slides down a frictionless incline. The block is released from rest at…

A: GivenThe block is released from restInitial velocity of block is zero, u=0At Distance, s=7 m , v=3.8…

Q: This is a practice problem that I'm pretty sure I got correct. I got that she rode 3388 meters on…

A: Given that:During first part of trip:Distance of first trip is given by:During second part…

Q: A motorist drives north for 41.0 minutes at 67.0 km/h and then stops for 15.0 minutes. He then…

A: @ first 41 minutes, t1= 41min = 41/60 hours = 0.683333333 hours v1= 67 km/hr Therefore,…

Q: An object starts from rest at time t = 0.00 s and moves in the +x direction with constant…

A: Given data  The object's initial velocity is: u = 0 The object starts at the time: t1 = 0 s The…

Q: A race car traveling northward on a straight, level track at a constant speed travels 0.751 km in…

A: The objective of the question is to find the average velocity of the car for the first leg of the…

Q: A speedboat starts from rest and accelerates at +2.34 m/s2 for 7.87 s. At the end of this time, the…

A:

Q: What is the speed of the rock just before it hits the street?

A:

Q: A car is traveling along a horizontal road with an initial velocity of 17.8 m/s in the positive…

A: The given values are,

Q: A hare and a tortoise compete in a race over a course 2.80 km long. The tortoise crawls straight and…

A:

Q: Some people can throw baseball with a speed of 17.9 m/s (40mph). Suppose a ball is thrown straight…

A: Total time of flight for the ball thrown vertically upwards is,

Q: A volleyball starts from rest and accelerates with an acceleration of 0.405 m/s2 while moving down a…

A:

Q: A typical sneeze expels material at a maximum speed of 44.9 m/s. Suppose the material begins inside…

A: maximum velocity (v) = 44.9 msinitial velocity (u) = 0 msdistance moved while accelerating (d) =…

Q: Compute your average velocity in the following two cases: (a) You walk 60.3 m at a speed of 1.37 m/s…

A: GIVEN      walk for 1.00 min  a speed of 1.37 m/s then run for 1.89 min at 3.16 m/s along a straight…

Q: You throw a tennis ball straight up. It takes 7.0 seconds to go up and then return to your hand. How…

A:

Q: The driver of a truck slams on the brakes when he sees a tree blocking the road. The truck slows…

A:

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

A: The distance traveled in the original direction is given by: distance = speed x time = 640 mi/h x…

Q: a juggler throws a bowling pin straight up with an initial speed of 5.7 m/s from an initial height…

A: Given data:  Initial velocity (u) = 5.7 m/s, straight upward Initial height (h) = 4.3 m Required:…

Q: An object is moving at a constant velocity of 2.0 m/s due east from t = 0 s to t = 2 s. The object…

A: From t=0 to t=2 sec, object is moving with constant velocity. Hence, displacement is :- s=uts=2×2s=4…

Q: runner and a cyclist compete in a race over a straight course 20 km long. The runner runs at a…

A:

Q: The citizen leaves a city at 3:00 p.m. It travels at 36.0 m / s when the engine of its car stops.…

A: Given: Initial speed of car (u) = 36.0 m/s During first t1 =12 seconds the acceleration of car = a1.…

Q: A pebble is thrown downward from a 56.0-m-high cliff with an initial speed of 5.00 m/s. How long…

A:

Q: A swimmer bounces straight up from a diving board and falls feet first into a pool. She starts with…

A: Write the given values with suitable variables. u=4 m/sh=-1.1 m Here, u denotes the initial velocity…

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: A physics teacher walks 5 km East, 2.5 km South, 5 km West, and finally 2.5 km North. The entire…

A: The solution can be given as :- Average speed=total distancetimeAverage velocity=total…

Q: A car is moving in constant motion along the positive x-direction on a straight and level road. For…

A: the average velocity of the car is ,   vav-x=x2-x1t2-t1

Q: A Boeing 747 "Jumbo Jet" has a length of 64.5 m. The runway on which the plane lands intersects…

A:

Q: You drop a stone down a well that is 7.26m deep. How long is it before you hear the splash? The…

A: Given  Depth of the well = 7.26 m Speed of the sound = 316.4 m/s Air resistance is negligible To…

Q: A gnat takes off from one end of a pencil and flies around erratically for 3 s, seats on a wall for…

A: Given data:   A gnat takes off from one end of a pencil to other end t1 = 3 s, t2 = 2.4s and t3 =…

Q: A straight running track is 2400 m long. A runner starts from the start line of the track, runs to…

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: Jack and Jill exercise in a 25.0 m long swimming pool. Jack swims 9 lengths of the pool in 148.7 s…

A:

Q: An object is thrown straight up from the top of a building that is 31.2 m high. The object is thrown…

A:

Q: A swimmer bounces straight up from a diving board and falls feet first into a pool. She starts with…

A: The latter method is the easiest to find how long the swimmer’s feet were in air.

Q: A 7.3 kg object initially has a momentum of 85 kgm/s. The object then experiences an impulse of -94…

A: a)We know that momentum P=Mv 85=7.3vi vi=11.64m/s

Q: A rock is thrown directly upward from the edge of the roof of a building that is 66.2 meters tall.…

A:

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 –