| ⇦ | 
| ⇨ |
A particle moving in a straight line covers half the distance with speed of 3 m/s.The other half of the distance is covered in two equal time intervals and with speeds of 4.5 m/s and 7.5 m/s,respectively. The average speed of particle during this motion is
Options
(a) 4 m/s
(b) 5 m/s
(c) 5.5 m/s
(d) 4.8 m/s
Correct Answer:
4 m/s
Explanation:
Average Speed for second half= 4.5+7.5/2 =6 m/s
If particle travels in two equal time interval, Average Speed = 2v1*v2 / (v1+v2)
here v1=3 m/s and v2=6 m/s, so
Average Speed= 2*v1*v2/v1+v2 = 2*3*6 / (6+3) =36/9=4.0 m/s
Related Questions: - A body is thrown vertically up with a velocity u.It passes three points A,B and C
- A thin film of soap solution (n=1.4) lies on the top of a glass plate (n=1.5).
- A solid sphere of mass M, radius R and having moment of inertia about an axis passing
- The velocity of radio-waves is 3×10⁵ km/s. The frequency corresponding to wavelength
- The apparent weight of the body of mass 10 kg when it is travelling upwards with
Topics: Motion in Straight Line
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A body is thrown vertically up with a velocity u.It passes three points A,B and C
- A thin film of soap solution (n=1.4) lies on the top of a glass plate (n=1.5).
- A solid sphere of mass M, radius R and having moment of inertia about an axis passing
- The velocity of radio-waves is 3×10⁵ km/s. The frequency corresponding to wavelength
- The apparent weight of the body of mass 10 kg when it is travelling upwards with
Topics: Motion in Straight Line (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply