Question

What will be the final velocity of a vehicle, if it started from rest and accelerates at 4 m/s² after 5 second?​

Answer 1

Answer:

What will be the final velocity of the car if it starts to move from rest and accelerates at 10m/s after 5 seconds? Acceleration is change in velocity over time, so change in velocity = acceleration times time, or in this case 10m/s² * 5s = 50 meters per second.

Explanation:

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Answer 2

$\large \underline\mathtt{given : } \\ \\\large \mathtt{ \: \: \: \: \: \: \: acceleration = 4m {s}^{ - 2} } \\ \\\large \mathtt{ \: \: \: \: \: \: \: time = 5 \: seconds } \\ \\ \large \mathtt{ \: \: \: \: \: \: \: starting \: \: from \: \: rest = 0m}$

$\large \underline\mathtt{using \: \: formula : } \\ \\ \large \mathtt{ \: \: \: \: \: v = u + at} \\ \\ \large \mathtt{here \: - \: } \\ \\ \large \mathtt{ \: \: \: \: \: v = final \: \: velocity} \\ \\\large \mathtt{ \: \: \: \: \: u = initial \: \: velocity} \\ \\\large \mathtt{ \: \: \: \: \: t = time}$

$\large \underline\mathtt{solving : } \\ \\ \large \mathtt{ \: \: \: v = 0 + 4 \times 5} \\ \\ \large\mathtt{ \therefore \underline{initial \: \: velocity = 20 \: m {s}^{ - 2} }}$