Sean is running a 100 m dash. When the starter’s pistol fires, he leaves the starting block and continues speeding up until 6 s into the race, when he reaches his top speed of 11 m/s. He holds this speed for 2 s; then his speed has slowed to 10 m/s by the time he crosses the finish line 11 s after he started the race. What was Sean’s average acceleration during the first 6 s of the race? What was Sean’s average acceleration from 6 to 8 s into the race? What was Sean’s average acceleration from 8 to 11 s into the race?

Q: using the information down below generate graphs of the position-time, velocity-time, and…

A:

Q: A sprinter starting from rest on a straight, level track is able to achieve a speed of 14 m/sec in…

A: The average acceleration is determined by the equation,

Q: In November 2011, Miami Dolphins running back Reggie Bush was fined $7500 for “excessive…

A: Write the initial velocity of dolphins. vi=26.5 ft/s   Write the distance traveled by the dolphins.…

Q: Shown below is a graph of velocity versus time for a moving object. The object starts at position x…

A: Given Data:  Initial position of object x=0 m Final time t=2 s At t=2 s, velocity (v)= 10 ms

Q: A bike accelerates at a rate of 2.0 m/s2, from rest, over a distance of 148 m. What is the speed of…

A:

Q: 1).A car accelerates from rest until it is traveling at 88km/hr. The time to keep up to speed is 6.2…

A: 1)Initial speed (u) = 0 m/sfinal speed (V) = 88 km/hr = 88×518 m/s = 24.44 m/st = 6.2 sec

Q: Graphing: Graph the following. Be able to graph given data. Be able to identify the independent and…

A: The solution can be given as follows :-

Q: Meters/Time = Speed 10m/time World Record 100m Dash Dash Usain Bolt Average Speed Acceleration…

A: v = d / t where v = average speed            d = total distance travelled            t = total time…

Q: 15. A car started from rest and reaches a speed of 18 m/s in 25 seconds. How many seconds would it…

A:

Q: Question: A person drives a cart along a straight track. The velocity of the cart changes over time…

A:

Q: Salt Flats: A driver wants to see how fast his car can go, so he goes out to the salt flats where he…

A: Given data:  Initial velocity (v0) = 0 m/s Distance traveled (Δx) = 2000.0 m Acceleration (a) = 1.60…

Q: 7. How far did Mikey run in 2.0 seconds, assuming that he got up to 2.0 m/s in half a second and was…

A:

Q: Jim is trying to improve his speed on the track so he can qualify for the state championship.  As he…

A: The given values are, vi=70 m/min  =70m1 min×60 s1 min  =1.17 m/svf=106m1 min×60 s1 min   =1.77…

Q: 2. A vehicle accelerates from 25 m/s to 85m/s in exactly 5.0 seconds. a) What was its acceleration?…

A: a) The  kinematic equation is,

Q: A world record was set for the mens 100-m dash in the 2008 Olympic Games in Beijing by usian bolt of…

A:

Q: Two bicyclists were riding their bikes at a rate of 20 kilometers per hour (km/h). During the next…

A: Given data: Initial velocity (V0) = 20 km/h Final velocity (V) = 26 km/h Time (t) = 1/2 h = 0.5 h…

Q: Kate Jenkin's Reckless Driving. After learning that she's very fast on foot, Kate decides she wants…

A: Given: Car's initial speed  u= 0 m/s Car's final speed  v=39 m/s Time t = 3.9 s

Q: The kinematical graphs of a person riding her bicycle are shown below. Time is measured in second,…

A: Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: A new prototype car is first test driven at 75 m/s for 9 seconds and then it is immediately slowed…

A: Given:

Q: Part A.) What is the final velocity, in meters per second, of a freight train that accelerates at a…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

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: displacement

A: Given: The runner starts running from her house and ends up back at her house. The total distance…

Q: You jog 8 complete laps around a 400 m track, and it takes you 14.5 minutes.  Question A: Calculate…

A:

Q: The velocity vs. time graph for an object in motion is shown below. What is the total distance…

A:

Q: Jaques ran a cross-country meet after school. After 3.5 minutes, he was 630 m from the starting…

A: The initial position xi=630 m at ti=3.5 minutes=210 s The final position xf=1260 m at tf=7.0 minutes…

Q: Two boys, Brady and Quinn, are running a 100 meter race. In the race, Brady beats Quinn by 5 meters.…

A: We have Two boys, Brady and Quinn, are running a 100 meter race.In the first race, Brady beats Quinn…

Q: 3. What is happening to the velocity of an object if it has a negative acceleration? it is…

A: Acceleration is the rate of change of velocity.

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 –