Statement is:a bus is moving on a straight road towards north with a uniform speed of 50 km/h, when it turns left through 90 °. If the speed Remains unchanged after turning, the increase in the velocity of the bus in the turning process is? Ans is70.7km/h along south westQn is why not north west
Kavita , 8 Years ago
Grade 12th pass
1 Answers
Vikas TU
Last Activity: 8 Years ago
Hello Kavita, . The problem stated here is: the speed is constant .i.e. acceleration =0.
Now initial velocity = u = +50j and final velocity = v = -50i
Change in velocity ===> v – u = -50i – 50 j = 50(-i – j) km/hr.
magnitude = 50*root2. = 70.7 km/hr. Direction u can check as it comes: -i-j that is Sout west.