logo
or
search
upload

A driver of a car A travelling at 54 km//h applies the brakes and stopes the car in 4 seconds. Another driver of car B travelling at 36 km//h applies the brakes and stops the car in 6 seconds. Plot speed versus time graphs for the two car. which of the cars travelled farther before stopping ?

Apne doubts clear karein ab Whatsapp par bhi. Try it now.
CLICK HERE

Loading DoubtNut Solution for you

Watch 1000+ concepts & tricky questions explained!

190.3 K+ views | 9.4 K+ people like this

   
Share
Share

Answer Text

Solution :
For Car `A` <br> `u = 54 km//h = (54 xx 1000 m)/(60 xx 60 s) = 15 m//s` <br> `v = 0, t = 4 sec`. <br> For Car `B` <br> `u = 36 km//h = (36 xx 1000 m)/(60 xx 60 s) = 10 m//s` <br> The speed time graphs for cars `A` and `B` are as hsown in Fig. <br> Distance travelled by A before stopping <br> `s_(1) =` area under vel. time graph of `A = (15 xx 4)/(2) = 30 m` <br> Distance travelled by B before stopping <br> `s_(2) =` area under vel. time graph of `B = (10 xx 6)/(2) = 30 m` <br> Clearly, `s_(1) = s_(2)` <br> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/PR_IX_V01_C01_E01_100_S01.png" width="80%">

Related Video

2:15

298.0 K+ Views | 14.8 K+ Likes

2:48

261.3 K+ Views | 179.2 K+ Likes

2:05

300+ Views | 17 Likes

2:16

176.6 K+ Views | 8.8 K+ Likes

3:06

11.2 K+ Views | 7.3 K+ Likes

381.9 K+ Views | 19.0 K+ Likes

39.9 K+ Views | 2.0 K+ Likes

bottom open in app