Question

answer this question please​

Answer 1

Answer:

option c is the answer

Step-by-step explanation:

I hope this helps you ❤️❤️

Answer 2

Answer:-

According to the Question

Firstly we calculate the acceleration in 1st case .

It is given that

Initial velocity ,u = 0m/s

Final velocity ,v = 36×5/18m/s = 10m/s

Time taken ,t = 10 s

As we know that acceleration is defined as the rate of change in velocity.

a = v-u/t

where,

v is the final velocity

a is the acceleration

u is the initial velocity

t is the time taken

Substitute the value we get

:\implies:⟹ a = 10-0/10

:\implies:⟹ a = 10/10

:\implies:⟹ a = 1m/s²

Hence, acceleration in 1st case is 1 m/s².

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Now,

calculating acceleration in 2nd case

Initial velocity ,u = 36×5/18 = 10m/s

Final velocity ,v = 0m/s

Time taken ,t = 20s

Using formula

a = v-u/t

substitute the value we get

:\implies:⟹ a = 0-10/20

:\implies:⟹ a = -10/20

:\implies:⟹ a = -1/2

:\implies:⟹ a = -0.5m/s²

here , negative sign show retardation

Hence, the acceleration in 2nd case is 0.5m/s².

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in this question, option c is the answer