Question

Bring the ans by giving me step by step explanation​

Answer 1

Answer:

80J

Explanation:

it started from rest ( not mentioned in the question)

m = 10 kg

u = 0

a = 2 m/s^2

t = 2 s

s = ut + 1/2 at^2

s = 4 m ( calculation...)

W = F×S

W = m a S

W = 10 × 2 × 4

W = 80 J

Answer 2

Explanation:

We know that,F=m×a

then, F =(10×2)=20N

Then, W =F×d

We found the value of F

but cannot find the value of distance.

Yes, if you think it4m then the ans. is 80j