Question

when the car starting from restthen some times after reproduce of axlaration is 20m\s 2 in 20 sec find the value of speed​

Answer 1

Answer:

this will help you....

Answer 2

Speed of car = 400 m/s

Explanation :

Car starting from rest accelerating at the rate of 20 m/s² in 20 seconds.

What is final speed of car?

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Here,

□ Initial speed (u) = 0

□ Acceleration (a) = 20 m/s²

□ Time (t) = 20 seconds.

We will use 1st equation of motion :

⇒ v = u + at

⇒ v = 0 + 20 × 20

⇒ v = 0 + 400

⇒ v = 400 m/s

∴ Final speed of car = 400 m/s