Answer:
acceleration= 2 m/s2
retardation= -1 m/s2
Explanation:
look,
given u = 36 km/s= 10 m/s
v = 72 km/s = 20 m/s
t= 5s
these all are given to find acceleration
so a= v-u/t
a = 20-10/5
= 10/5
= 2 m/s2
now the initial velocity becomes 20m/s
and the body is going to stop then v= 0m/s
a= v-u/t
= 0-20/20
= -1 m/s2
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Answers & Comments
Answer:
acceleration= 2 m/s2
retardation= -1 m/s2
Explanation:
look,
given u = 36 km/s= 10 m/s
v = 72 km/s = 20 m/s
t= 5s
these all are given to find acceleration
so a= v-u/t
a = 20-10/5
= 10/5
= 2 m/s2
now the initial velocity becomes 20m/s
and the body is going to stop then v= 0m/s
a= v-u/t
= 0-20/20
= -1 m/s2