Question

2. A bus decreases its speed from
80 km hto 60 km h in 5 s.
Find the acceleration of the bus.​

Answer 1

Answer:

The acceleration of the bus is 4 km/h² or 1.12m/s².

Step-by-step explanation:

Here we got u= 80km/h

v=60km/h

t=5s

We know that,

v=u+at

=80=60+5a

=> 5a=80-60=20

=>a=20/5=4km/h²

Hence, acceleration of the bus is=

4km/h² or 4000/3600m/s²= 1.1111......m/s²

=1.12m/s²(approximately)

Or we can write acceleration=

4km/h² or 1.12m/s².

Answer 2

Here Is Your Ans ⤵

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Ans :-

➡Acceleration = 4 Km/h²/sec

Given :-

➡U = 80 Km/h

➡V = 60 Km/h

➡T = 5 Sec

To Find :-

➡Acceleration = ?

Solution :-

$= > acceleration = \frac{v - u}{t} \\ \\ = > acceleration = \frac{60 - 80}{5} \\ \\ = > acceleration = \frac{- 20}{5} \\ \\ = > acceleration = - 4 \: \: \: \frac{km}{ {h}^{2}/Sec }$

Hence , Acceleration Of The Bus Is

$\fbox{- 4 \: \: \frac{km}{ {h}^{2}/Sec } }$

Remember :-

# The Rate oF Change of Velocity Is Called Acceleration

# Acceleration is a vector quantity because it has both magnitude and direction

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