Question

Q1.a start from rest and accelerate uniformly at the rate of 5 m/s sq for 5 sec. calculate the velocity of train in 5 sec.

Answer 1

Answer:

✬ Final Velocity = 25 m/s ✬

Correct Question:

A bus started from rest and accelerates uniformly at the rate of 5 m/s sq for 5 sec. calculate the velocity of train in 5 sec.

Explanation:

Given:

A bus starts from rest (u) = 0 m/s.

Acceleration of the bus (a) = 5 m/s².

Time taken (t) = 5 seconds.

To Find:

What is the final velocity of bus ?

Formula to be used:

First law of motion

v = u + at

Solution: Putting all the given values on formula

Initial velocity (u) = 0 m/s

Time (t) = 5 seconds

Final velocity (v) = ?

Acceleration (a) = 5 m/s²

⟹ v = u + at

⟹ v = 0 + 5 \times× 5

⟹ v = 0 + 25

⟹ v = 25 m/s

Hence, the final velocity of the bus after 5 seconds is 25 m/s.

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★ Two other laws of motion ★

➣ s = ut + 1/2at²

➣ v² = u² + 2as

Answer 2

Hello there !

We have  given that :

u = 0

a = 5m/s^2

t = 5 seconds.

v = ?

Now, by applying equation of motion :

v = u + at

v = 0 + 5 x 5

v = 25 m /s

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