(6. The diagram is the speed-time graph of an object which travels at constant speed of \( 42 \mathrm{~m} / \mathrm{s} \) for 4 seconds and then slows down uniformly, coming to rest after a further 3 seconds. Calculate (a) the speed of the object after 6 seconds, (b) the average speed of the object during the 7 seconds. (NS2/1/19) (J81/2/5)
Added by Allison L.
Close
Your feedback will help us improve your experience
Saman Zulfiqar and 57 other Physics 101 Mechanics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
For the velocity-time graph shown in figure below the distance covered by the body in last two seconds of its motion is what fraction of the total distance covered by it in all the seven seconds (a) $\frac{1}{2}$ (b) $\frac{1}{4}$ (c) $\frac{1}{3}$ (d) $\frac{2}{3}$
Figure $2-42$ shows the velocity vs. time graph for an object constrained to move along a line. The positive direction is to the right. (a) At what times, or during what time periods, is the object's acceleration zero? (b) At what times, or during what time periods, is the object's acceleration constant? (c) At what times, or during what time periods, is the object's acceleration changing? If there is no time or time period for which a given condition exists, state that explicitly.
The diagram shows the displacement-time graph for a particle moving in a straight line. The average velocity for the interval $t=0, t=5$ is (a) $\mathrm{o}$ (b) $6 \mathrm{~ms}^{-1}$ (c) $-2 \mathrm{~ms}^{-1}$ (d) $2 \mathrm{~ms}^{-1}$
Recommended Textbooks
University Physics with Modern Physics
Physics: Principles with Applications
Fundamentals of Physics
Watch the video solution with this free unlock.
EMAIL
PASSWORD