Question

A body is moving with a speed of 20m/s when certain force is applied an acceleration of 40m/s^2 is produced. After how much time its velocity will be 80m/s .​

Answer 1

Answer:Final velocity , V= 80 m/s

Initial velocity , U = 20 m / s

Acceleration , a = 4 m/s2

APPLYING FIRST EQn OF MOTION :

      V=u + at

⇒80 = 20 + 4t

⇒60= 4t

⇒t = 15 sec

HOPE U UNDERSTOOD IT

Answer 2

Answer:

$\huge\underline\bold\red{AnsWeR}$

Final velocity , V= 80 m/sInitial velocity , U = 20 m / sAcceleration , a = 4 m/s