![Vidéo de question : Conversion des unités de vitesse de mètres par seconde en kilomètres par heure | Nagwa Vidéo de question : Conversion des unités de vitesse de mètres par seconde en kilomètres par heure | Nagwa](https://media.nagwa.com/630182694173/fr/thumbnail_l.jpeg)
Vidéo de question : Conversion des unités de vitesse de mètres par seconde en kilomètres par heure | Nagwa
The equation of the progressive wave, where t is the time in second, x is the distance in metre isy = Acos240 (t x/12) The phase difference (in Sl units) between two
![A particle moves for 20 sec with velocity 3 m/s and then moves with 4 m/s for another 20 sec and finally moves with velocity 5 m/s for next 20 sec . A particle moves for 20 sec with velocity 3 m/s and then moves with 4 m/s for another 20 sec and finally moves with velocity 5 m/s for next 20 sec .](https://i.ytimg.com/vi/k4GQQfqkI48/maxresdefault.jpg)
A particle moves for 20 sec with velocity 3 m/s and then moves with 4 m/s for another 20 sec and finally moves with velocity 5 m/s for next 20 sec .
2.straight line in such way that it covers 1st half distance with speed 3 m/s and nextA particle moves on ahalf distance in 2 equal time intervals with speeds 4.5 m/s and
![A ball of mass 20 gram hits a wall at an angle of 45 degree with a velocity of 15 metre per second. if the ball rebounds at 90 degree to the A ball of mass 20 gram hits a wall at an angle of 45 degree with a velocity of 15 metre per second. if the ball rebounds at 90 degree to the](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/110507/content_img_20180216_154240.png)