Question

Hey Users!

Plzz solve these 2 questions :) ❤

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Answer 1

1. a=2.5 m/s-2

a=2.5 m/s-22.v=25m/s

Answer 2

1. A scooter travelling at 10m/s speed up to 20m/s in 4 sec. Find the Acceleration of train.

Given,

1. Initial Velocity (u) = 10 m/s
2. Final Velocity (v) = 20m/s
3. Time (t) = 4 s

By the equation of motion,

$\: \: \: \: \: \: \boxed{\: a = \frac{v - u}{t} }$

$a = \frac{20 - 10}{4} \\ \\ a = \frac{10}{4} \\ \\ a = 2.5m {s}^{ - 2}$

Acceleration of the train is 2.5 m/s²

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2. A train starts from rest and accelerate uniformly at the rate of 5m/s² for 5s. Calculate Velocity in 5s.

Given,

1. Initial Velocity (u) = 0m/s
2. Acceleration (a) =5m/s²
3. Time (t) = 5s

$\: \: \: \: \: \: \boxed{\: v = u + at}$

Now,

$v = 0 + 5 ( 5) \\ v = 5 (5) \\ v = 25ms^{-1}$

Velocity of the train in 5 seconds is 25m/s.