Question

starting from the rest of guns to attend a speed of 10 M per second in 40 seconds then he slows down 5 M per second in next 20 seconds calculate the acceleration of Tom in both the cases

Answer 1

hey...here is the ans...


In first case...

(starting from rest)

u= 0

v= 10m/s

t = 40 s
therefore acceleration is v-u/t

= 10 -0/40

..= 10/40

= 1/4 m/s^2..

in second case

u = 10m/s

v = 5 m/s

t = 20 s

therefore acceleration = v-u/ t

= 10-5/20

that is 5/20

= 1/4..☺

so in both the cases acceleration will be 1/4
m/s^2