Physics, asked by shalinidavidwar5474, 9 months ago

A body is initially moving with a velocity of 5 m/s. It undergoes an acceleration of 2 m/s2 for 4 seconds. Find the displacement (in m) of this body in these 4seconds.
A) 4 B) 72 C) 36 D) 8

Answers

Answered by Anonymous
28

Answer:

(C) 36 metres

Explanation:

Given :

  • Initial velocity of the body = u = 5 m/s

  • Acceleration of the body = a = 2 m/s²

  • Time taken for the body = t = 4 seconds

To find :

  • Displacement in metres of the body

Using the second equation of motion :

S=ut+½×at²

S=5×4+½×2×16

S=20+16

S=36 metres

The Displacement of the body after 4 seconds is equal to 36 metres with an acceleration of 2 m/s² in 4 seconds

Hence option c is correct

Answered by EliteSoul
20

Answer :

Given that body moving with initial speed of 5 m/s . It undergoes an acceleration of 2 m/s² for 4 seconds.

We have to find displacement of body in these 4 seconds. A) 4. b) 72. c) 36. d) 8

From data we have :

Initial speed (u) = 5 m/s

Acceleration (a) = 2 m/s²

Time (t) = 4 seconds.

We will use 2nd equation of motion to find displacement :

s = ut + ½ at²

Substituting values,

→ s = 5 × 4 + ½ × 2 × 4²

→ s = 20 + 4²

→ s = 20 + 16

s = 36 m

Displacement of body in 4 seconds = 36 m

Correct option : C) 36 m

Equations of motion :

v = u + at. (i)

s = ut + ½ at². (ii)

- = 2as. (iii)

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