Question

when a car driver travelling at a speed of 10m/s applies brakes and brings the car to rest in 20 s , then the acceleration will be??​

Answer 1

Given :-

⟹ Initial speed = 10m/s

⟹ Final speed = 0m/s.

⟹ Time. taken to come to rest = 20s

To find :-

⟹ Acceleration of the car

Solution :-

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⟹ Acceleration = Final Velocity - Initial Velocity/ Time

$⟹\: a = \frac{v - u}{t}$

$⟹ a \: = \frac{0 - 10}{20}$

$⟹ a \: = \frac{ - 10}{20} = \frac{ - 1}{2}$

$⟹ \: a \: = \: - 0.5m/s²$

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Additional Information :-

⟹ Acceleration is described as the rate of change of velocity of an object. A body's acceleration is the final result of all the forces being applied on the body, as defined by Newton's Second Law. Acceleration is a vector quantity that is described as the frequency at which a body's velocity changes.

⟹ Types of Acceleration

Uniform & Non Uniform Acceleration.

Uniform & Non Uniform Acceleration.Uniform Acceleration. ...

Uniform & Non Uniform Acceleration.Uniform Acceleration. ... Non uniform acceleration. ...

Uniform & Non Uniform Acceleration.Uniform Acceleration. ... Non uniform acceleration. ... Instantaneous Acceleration. ...

⟹ Acceleration is determined by the slope of time-velocity graph.

Answer 2

Answer:

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