Question

1). Find the acceleration of a boy who started to jog on a straight track, he took 30 minutes to complete the track and reached finish line at 15m/s.​

Answer 1

Answer:

given: v = 15m/sec, u = 0, t = 30 sec

to find acceleration

Explanation:

formula used : v = u + at

=> 15 = 0 + a × 30

=> 15 = 30×a

=> a = 15/30

=> a = 0.5 m/sec²

Answer 2

Answer:

u=0,v=15m/s,time=30min,30×60=1800sec.

a=????

using first equation of motion,

v=u+at

15=0+a×1800

a=15/1800

a=120m/s^2