Question

a rectangle of length 200 m and width 100m has a path of width 5 m on and on the inside boundary what is the area of that parts

Answer 1

Answer:

✬ Acceleration = 0.25 & 0.5 m/s² ✬

Explanation:

Given: (Solving first case)

A car starts from rest.

Final velocity of car is 10 m/s.

Time taken to attain final velocity is 40 s.

To Find:

Acceleration of the car ?

Formula to be used:

V = u + at

Solution: Here we have

u = 0

v = 10 m/s

t = 40 s

a = ?

Substituting the values on formula

\implies{\rm }⟹ 10 = 0 + a × 40

\implies{\rm }⟹ 10 = 40a

\implies{\rm }⟹ 10/40 = a

\implies{\rm }⟹ 1/4 = a

\implies{\rm }⟹ 0.25 m/s² = a

So acceleration of car in first case is 0.25 m/s².

Given: (Second case)

Final velocity is 5 m/s.

Initial velocity is 10 m/s.

Time given is 10 s.

To Find:

Acceleration of the car ?

Formula to be used:

a = v – u/t

Solution: Here we have

u = 10 m/s

v = 5 m/s

t = 10 s

a = ?

Substituting the values on formula