Learn to Create a Robotic Device Using Arduino in the Free Webinar. Register Now
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
Free webinar on Robotics (Block Chain) Learn to create a Robotic Device Using Arduino
30th Jan @ 5:00PM for Grade 1 to 10
a car starts from rest and accelerates uniform rate of 5 m/s^2 for sometime and retards at the same rate and comes to rest. In between acceleration and retardation it also moves with uniform velocity.Total time for journey is 25 sec and average speed for journey is 20 m/s . How long does the car moves with constant speed a car starts from rest and accelerates uniform rate of 5 m/s^2 for sometime and retards at the same rate and comes to rest. In between acceleration and retardation it also moves with uniform velocity.Total time for journey is 25 sec and average speed for journey is 20 m/s . How long does the car moves with constant speed
During acceleration,x1 = 0 + 0.5*5*t1^2..............(1)uniform motion,x2 = v*t2.............(2)retardation,x3 = v*t3 – 0.5*5*t3^2..........(3)t1 + t2 + t3 = 25 …................(4)avg. speed,20 = (x1 + x2 + x3)/25.....................(5)Just before uniform motion,v = 0 + 5*t1.......................(6)solve the eqns. and get the values.
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -