Question

A bullet accelerates from a stop to 1000m/s to the East. It accelerates at 10000m/s2 in the same direction. How long did it take for the bullet to reach its final velocity?

Answer 1

The bullet reaches its final velocity after 0.1 second.

Explanation:

Velocity: The ratio of distance to the time that needs to cover the distance.

Acceleration: The change of velocity per unit time is called the acceleration of the object.

`Acceleration=\frac{\textrm{Final velocity- initial velocity}}{Time}`

S.I unit is m/s².

C.G.S unit is cm/s².

Dimension: [LT⁻²]

An accelerometer is used to measure acceleration of an object.

Given that

The bullet accelerates from a stop to 1000 m/s to the east.

It accelerates at 10,000 m/s² in the same direction.

The initial velocity of the object is = 0 m/s

The final velocity of the object is = 1000 m/s

`\therefore 10000=(1000-0)/(Time)`

`\rightarrow Time = (1000)/(10000)`

`\rightarrow Time = \frac1{10}`

`\rightarrow Time = 0.1`

The bullet reaches its final velocity after 0.1 second.