Question

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:

25m/sec

Explanation:

Formula:

v=u+at

v=0+5×5

v=25

Therefor Velocity is 25m/sec

Answer 2

✬ 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

$\implies{\rm }$ v = u + at

$\implies{\rm }$ v = 0 + 5 $\times$ 5

$\implies{\rm }$ v = 0 + 25

$\implies{\rm }$ 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