Question

(Ans : 4s, 64 m)
Aparticle covers 45 m in the 7th second and 75 m
in the 12th second of its motion. Find its initial
velocity and acceleration. (Ans: 6 m/s, 6m/s21​

Answer 1

Answer:

42,6

Explanation:

v7th = 45

v12th = 75

a = ( 75-45)/ 5= 6 m sec^-2

45 = u+ 1/2*6*1

45= u+ 3

u= 42 meter/sec