Question

a body moves with a velocity of 10 metre per second for 10 seconds and then with a velocity of 20 metre per second in the same direction for 40 seconds find its average velocity​

Answer 1

Explanation:

AS THE DIRECTION IS SAME THROUGHOUT IN THIS QUESTION

SPEED = DISTANCE /TIME

FOR 1ST CASE,  10 = DISTANCE 1 /10

DISTANCE 1 = 100 M

FOR 2ND CASE ,

20 = DISTANCE 2 /40

DISTANCE 2 = 800 M

AVERAGE VELOCITY = TOTAL DISPLACEMENT / TOTAL TIME

HENCE, HERE THE DIRECTION IS SAME

DISPLACEMENT = DISTANCE

AVERAGE VELOCITY = 900/50

18 M/SEC²

HOPE IT HELPS..