Question

18. A body is started from rest and moves with uniform acceleration 4m/s The average velocity in 5 second is​

Answer 1

• initial velocity=u=0m/s
• Acceleration=a=4m/s^2
• Time=t=5s
• Final velocity=v=?

According to first equation of kinematics

$\boxed{\sf v=u+at}$

$\\ \sf\longmapsto v=0+4(5)$

$\\ \sf\longmapsto v=20m/s$