Physics, asked by 27panditavansh, 1 year ago

1. When will you say a body is in (i) uniform acceleration? (ii) non-uniform acceleration? 2. A bus decreases its speed from 80 km h�1 to 60 km h−1 in 5 s. Find the acceleration of the bus.

Answers

Answered by kkavithamudaliar
0

A body is said to have uniform acceleration when there is equal change in velocity in equal interval of time

A body is said to have non uniform acceleration when there is unequal change in velocity in equal interval of time

v=60 km/hr

u=80 km/hr

t=5s

v= u+ a×t

60=80+ a×5

-20= a×5

a= -20/5

a= -4 km/hr^2

Answered by Anonymous
0

\huge \underline {\underline{ \mathfrak{ \green{Ans}wer \colon}}}

  1. Uniform Acceleration : A body is said to be in uniform acceleration if it travels with equal velocity in equal interval of Time.
  2. Non-Uniform Acceleration : A body is said to be non-uniform acceleration if it travels with unequal velocity in equal interval of time.

3)

Given :

  • Initial velocity (u) = 80 km/h = 22.2
  • Final velocity (v) = 60 km/h = 16.6
  • Time (t) = 5s

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To Find :

  • Acceleration of bus

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Solution :

We have formula :

\large{\boxed{\sf{a \: = \: \dfrac{v \: - \: u}{t}}}} \\ \\ \implies {\sf{a \: = \: \dfrac{16.6 \: - \: 22.2}{5}}} \\ \\ \implies {\sf{a \: = \: \dfrac{-5.6}{5}}} \\ \\ \implies {\sf{a \: = \: -1.12}} \\ \\ \underline{\sf{\therefore \: Acceleration \: is \: -1.12 \: ms^{-2}}}

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