Question

a truck traveling at speed 15m/s is slowed down to 10m/s in 10 seconds find the retardation​

Answer 1

Given :

• Initial velocity = 15 m/s
• Final velocity = 10 m/s
• Time taken = 10 seconds

To Find :

• The retardation.

Solution :

Negative acceleration is known as retardation. So, formula used for calculating retardation -

• $\boxed{\sf{a = \dfrac{v - u}{t} }}$

Where,

• a denotes acceleration
• v denotes initial velocity
• u denotes final velocity
• t denotes time taken

Substituting values,

$\longrightarrow \: \: \: \: \: \tt \: Retardation = \dfrac{10 - 15}{10}$

$\longrightarrow \: \: \: \: \: \tt \: Retardation = \dfrac{-5}{10}$

$\longrightarrow \: \: \: \: \: \: \underline{ \boxed{ \tt{ \pink{Retardation = 0.5 \: m/s^2}}}}$

Therefore, the retardation is -0.5 m/s².

Additional Information :

Acceleration :- It is defined as the rate of change of velocity of an object.

Formula -

• $\boxed{\sf{a = \dfrac{v - u}{t} }}$

Here,

• a = acceleration
• v = final velocity
• u = initial velocity
• t = time taken