An object moves along a straight line. The graph shows the position of the object as a function of time. Which of the segments of the graph does the object have a decreasing average speed with respect to time?

Q: Examine the position vs. time graph below. What is the speed of the object at t = 3.0 s? position vs…

A: The speed of the object at a certain instant of time is known as the instantaneous speed. The slope…

Q: A boy stands daydreaming as his friend runs by at the constant speed of 3.68 m/s. After 1.39 s, the…

A: Given: The constant speed of the boy's friend is 3.68 m/s. The initial speed of the boy is 0 m/s.…

Q: .00-m-high window 7.50 m off the ground on its path up and takes 1.30 s to go past the window. What…

A: Given,            height of window, h = 2.0 m            distance of window from ground, x = 7.50 m…

Q: a person walks at 4.5 meters per second from point a to b. Then walks back from point b to a at a…

A: Given data:  From point a to b Speed (V1) = 4.5 m/s From point b to a Speed (V2) = 3.2 m/s Required:…

Q: A marathon runner in training runs 7.5 km [S] and then 21 km [N]. Assume the entire run takes 1.6 h.…

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Q: A car travels up a hill at a constant speed of 10.0m/s and goes down through the same path at a…

A: Given data:  Speed when car travels up a hill (V1) = 10.0 m/s Speed when car travels down the hill…

Q: The position-versus-time graph shown below corresponds to an ant moving along the + x-direction.…

A: Average velocity = total displacement /total time taken

Q: A train starts from rest and accelerates uniformly, until it has traveled 2.5 km and acquired a…

A: During the first part of the journey, the initial velocity, u=0, final velocity, v=24m/s and the…

Q: A runner is training on an oval-shaped track where each lap has a length of 400 meters, the runner…

A: The length of the oval shaped track is l = 400 m. The runner completes 2 laps are returns to the…

Q: The motion of a cyclist is represented by the position - time graph below. A, B, C, D, E and F…

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Q: An electric vehicle starts from rest and accelerates at a rate of 3.0 m/s2 in a straight line until…

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Q: Starting at x = - 17 m at time t = 0 s, an object takes 17 s to travel 55 m in the +x direction at a…

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Q: The velocity of an object undergoing a constant acceleration is shown at two different times. The…

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Q: An object is moving with constant non-zero velocity in the + x direction. The position versus time…

A: Velocity = k (towards positive x axis) we know that V = dx/dt dx/dt = k dx = kdt

Q: The figure shows the acceleration-versus-time graph of a particle moving along the x-axis. Its…

A: The area under acceleration time graph gives velocity. Let v0 be the initial velocity, v be the…

Q: The figures below show two cars moving toward each other and the position versus time graphs for…

A: Initial distance of the green car is xg=270 m Initial distance of the red car is xr=-35 m ( Here -ve…

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 car travels a total distance of 300m.During the first half of this distance, the car starts from…

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

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Q: A fox is chasing a bunny. The bunny is initially hopping east at 6 m/s when it first sees the fox.…

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Q: A blue car travels down a straight road at a constant speed of 21.7 m/s. As they pass a red car,…

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Q: Marie-Philip Poulin begins from rest at one end of a 65 m long ice rink. She skates in a straight…

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Q: In heavy rush-hour traffic, you drive in a straight line at 12 m/s for 1.5 minutes, then you have to…

A: First caseVelocity v1= 12 m/sTime t1=1.5 minute Second case In stop condition v2=0 m/sTime t2=3.5…

Q: A vehicle accelerates down an on ramp and eventually reaches highway speed. The position of the…

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Q: Ahmed and Khalid are having a 100m race from start to finish.  Ahmed gives Khalid a 25m head start…

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Q: Your roommate drops a tennis ball from a third-story balcony. It hits the sidewalk and bounces as…

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Q: An object is initially at rest and subject to a constant acceleration of 1.59 m/s2. What amount of…

A: Given data: The initial velocity of an object is, u= 0 m/s The acceleration of an object is, a= 1.59…

Q: This graph shows an object’s velocity versus time as it is moving along the x-axis. Its initial…

A: This graph shows an object’s velocity versus time as it is moving along the x-axis. Its initial…

Q: The graph shows velocity vs. time. Velocity vs. Time Velocity (m/s) 300 250 200 150 100 50 0 0 10 20…

A: Given data:  The velocity vs time graph  Required: The average acceleration from 40 to 70s

Q: As part of an exercise program, a woman walks south at a speed of 2.00 m/s for 60.0 minutes. She…

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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 –