Time-velocity graph of a body is shown in the figure. Find its acceleration in m/s

At t = 0 s, v = 20 m/s

At t = 4 s,v = 80 m/s

Acceleration, a =

= 15m/s

Time-velocity graph of a particle is shown in figure. Find its instantaneous acceleration at following intervals :

(i) at t = 3s

(ii) at t = 6s

(iii) at t = 9s

a = slope of line AB = zero

(ii) Instantaneous acceleration at t = 6 s, is given by a = slope of line

BC = = – 10 m/s

(iii) Instantaneous acceleration at t = 9 s, is given by a = slope of line CD = = –50 m/s

Starting from rest, Deepak paddles his bicycle to attain a velocity of 6 m/s in 30 seconds then he applies brakes so that the velocity of the bicycle comes down to 4 m/s in the next 5 seconds. Calculate the acceleration of the bicycle in both the cases.

v = 6 m/s, time, t = 30 s

Using the equation v = u + at, we have

substituting the given values of u, v and t in the above equation, we get

a = = 0.2 m/s

(ii) Initial velocity, u = 6 m/s, final velocity, v = 4 m/s, time, t = 5 s, then

= ¬ 0.4 m/s

- Physics Tutor, Math Tutor Improve Your Child’s Knowledge
- How to Get Maximum Marks in Examination Preparation Strategy by Dr. Mukesh Shrimali
- 5 Important Tips To Personal Development Apply In Your Daily Life
- Breaking the Barriers Between High School and Higher Education
- 14 Vocational courses after class 12th
- Tips to Get Maximum Marks in Physics Examination
- Get Full Marks in Biology Class 12 CBSE

Download Old Sample Papers For Class X & XII

Download Practical Solutions of Chemistry and Physics for Class 12 with Solutions

- Newton’s laws of motion asked by Dr. Mukesh Shrimali
- Process of nutrition in Amoeba asked by Rajiv Sharma
- Importance of studying physics subject in school after 10th asked by Rajiv
- Refraction Through Prism in Different Medium asked by Kirti Sharma
- Ratio and Proportion Question asked by Education Desk
- Explain all the 12 tenses with example asked by Qwerty
- Refraction Through Prism in Different Medium asked by Seema Shrimali