Question

a car cover 144km in 2hrs50mins. Find its speed???

Answer 1

u=0m/s.

Velocity after 20 s is

v=144km/hr=(144)(5/18)m/s=40m/s.

Since acceleration is uniform, we can take average velocity

v(av)=(u+v)/2=(0+40)/2=20m/s. Then, distance covered in 20s is

d=v(av)(t)=(20m/s)(20s)=400m

Answer 2

Refer to the image attached.
HOPE THIS HELPS YOU