3 years ago

Two cars of the same mass have different velocities. Which car has more momentum

Physics

1 answer:

vampirchik [111]3 years ago

7 0

The car with the higher velocity would have a more impactful momentum.

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A shell of mass m and speed v explodes into two identical fragments. If the shell was moving horizontally (the positive x direct

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Answer:

The velocity of the other fragment immediately following the explosion is v .

Explanation:

Given :

Mass of original shell , m .

Velocity of shell , + v .

Now , the particle explodes into two half parts , i.e $\dfrac{m}{2}$ .

Since , no eternal force is applied in the particle .

Therefore , its momentum will be conserved .

So , Final momentum = Initial momentum

$mv=\dfrac{mv}{2}+\dfrac{mu}{2}\\\\u=v$

The velocity of the other fragment immediately following the explosion is v .

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3 years ago

2. _______ is a division of a school system below first grade. It could be half-day or full-day, and the curriculum varies from

chubhunter [2.5K]

The answers D kindergarten

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4 years ago

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A 2 kg watermelon is dropped from a 4 m tall roof. How fast will the watermelon be moving as it strikes the ground below?

Volgvan

Answer:

8.85m/s

Explanation:

v=√2gh

v=√2×9.8×4

v=8.85m/s

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3 years ago

A 10,844.0 kg truck is initially at rest. The truck then accelerates across a level road and reaches a constant speed. It takes

lara [203]

Answer:

1,634.1 W

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Power = work / time

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3 years ago

Two horizontal forces are exerted on a large crate. The first force is 317 N to the right. The second force is 173 N to the left

DENIUS [597]

Answer:

A. Refer to the figure.

B. The net force acting on the crate is

$F_{net} = F_1 - F_2 = 317 - 173 = 144N$

C. We should first find the acceleration of the crate using the following kinematics equation:

$v = v_0 + at\\6.5 = 0 + 5a\\a = 1.3 m/s^2$

Mass of the crate can be found by Newton’s Second Law:

$F = Ma\\M = F/a = 144/1.3 = 110.7 kg$

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4 years ago