# What is the speed of the block immediately after the bullet exits?

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## What is the speed of the block immediately after the bullet exits?

The block rests on a frictionless surface, and is thin enough that the bullet passes completely through it. Immediately after the bullet exits the block, the speed of the block is 23 m/s.

## What is the formula for the conservation of momentum?

What is the formula for the law of conservation of momentum? The formula for the Law of Conservation of Momentum is p=p’ or m1v1+m2v2=m1v1’+m2v2′. This equation shows us that the sum of the momentum of all the objects in the system is constant.

## How fast is a moving bullet?

When bullets fly through the air, they do so at amazing speeds. The fastest bullets travel more than 2,600 feet per second. That’s equivalent to over 1,800 miles per hour.

## How fast do bullets slow?

Once the gases stop pushing it, it begins to slow down due to two forces – the resistance of the air that it’s pushing through, and the downward suck of gravity. Typically, a bullet will take around 30 seconds to climb to a height of around three kilometres, at which point it has a velocity of zero. Then it falls.

## What is P in physics?

p = momentum m = mass v = velocity The definition of momentum. It is conserved (constant) if there are no external forces on a system.

## What is the SI unit of momentum?

Momentum | |
---|---|

SI unit | kilogram meter per second (kg⋅m/s) |

Common symbols | p, p |

Other units | slug⋅ft/s |

Dimension | MLT^{−}^{1} |

## How to calculate velocity?

Determine the object’s original velocity by dividing the time it took for the object to travel a given distance by the total distance. In the equation V = d/t, V is the velocity, d is the distance, and t is the time.

## What is faster than a bullet?

Speed of light—faster than a speeding bullet.

## What is the fastest bullet?

The . 220 Swift is the fastest commercial cartridge in the world, with a published velocity of 1,422 m/s (4,665 ft/s) using a bullet of 1.9 grams (29 gr) and 2.7 grams (42 gr) of 3031 powder.

## What is the speed of ak47 bullet?

AK-47 | |
---|---|

Muzzle velocity | 715 m/s (2,350 ft/s) |

Effective firing range | 350 m (380 yd) |

Feed system | 20-round, 30-round detachable box magazine, 40-round, 75-round drum magazines also available |

Sights | 100–800 m adjustable iron sights Sight radius: 378 mm (14.9 in) |

## What is the weight of a bullet?

The weight of a bullet is measured in grains. A typical . 22 caliber solid bullet is 40 grains.

## Can a human dodge a bullet?

The short answer here is that no, you cannot dodge a bullet. This is physically impossible, due to a number of different factors: not least the fact that it takes too long for signals to travel through your nervous system.

## How fast is a gun?

Firearm muzzle velocities range from approximately 120 m/s (390 ft/s) to 370 m/s (1,200 ft/s) in black powder muskets, to more than 1,200 m/s (3,900 ft/s) in modern rifles with high-velocity cartridges such as the . 220 Swift and .

## What is acceleration of block A immediately after it is released?

What is the acceleration of block A when the system is released from rest ? g/2 upwards.

## Does a bullet speed up after leaving the barrel?

A bullet is never faster than when it first leaves your barrel. Just as it starts to immediately fall due to gravity, it also starts to slow down due to air resistance.

## What is the formula for the speed of a block after a collision?

From the conservation of momentum, the formula during a collision is given by: m1v1 + m2v2 = m1v’1 + m2v’2. If the collision is perfectly inelastic, the final velocity of the system is determined using v’ = (m1v1 + m2v2)/m1 + m2.