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Crazy boy [7]
2 years ago
12

A bowling ball with a mass of 7.0 kg, generates 56.0 kgᐧm/s units of momentum. What

Physics
1 answer:
Misha Larkins [42]2 years ago
7 0

Answer:

8 m/s

Explanation:

p = mv \\ 56 = (7.0)(v) \\ v = 8.0 \: m {s}^{ - 1}

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Two forces, one four times as large as the other, pull in the same direction on a 10kg mass and impart to it an acceleration of
notsponge [240]

Answer:

The acceleration of the mass is 2 meters per square second.

Explanation:

By Newton's second law, we know that force (F), measured in newtons, is the product of mass (m), measured in kilograms, and net acceleration (a), measured in meters per square second. That is:

F = m\cdot a (1)

The initial force applied in the mass is:

F = (10\,kg)\cdot \left(2.5\,\frac{m}{s^{2}} \right)

F = 25\,N

In addition, we know that force is directly proportional to acceleration. If the smaller force is removed, then the initial force is reduced to \frac{4}{5} of the initial force. The acceleration of the mass is:

\frac{25\,N}{20\,N} = \frac{2.5\,\frac{m}{s^{2}} }{a}

a = 2\,\frac{m}{s^{2}}

The acceleration of the mass is 2 meters per square second.

4 0
2 years ago
What happens to electrical energy that is used by objects in our homes? (1 point) a It is absorbed by batteries. b It is destroy
Reil [10]

Question:

<em>What happens to electrical energy that is used by objects in our homes? (1 point)</em>

<em>a It is absorbed by batteries. </em>

<em>b It is destroyed. </em>

<em>c It is stored in solar panels. </em>

<em>d It is transformed into other forms of energy.</em>

<em />

Answer:

D

3 0
2 years ago
Read 2 more answers
Before a rifle is fired, the linear momentum of the bullet-rifle system is zero.
marusya05 [52]

Hi there!

II. Linear momentum of the system is zero.

This is an example of a RECOIL collision. With the Law of Conservation of Momentum, momentum remains constant before and after the collision.

Thus, the total momentum would also be equivalent to zero after the collision.

3 0
2 years ago
Pls help on this one?
sattari [20]
The answer is point C
4 0
2 years ago
N a scientific investigation, what is the name for a prediction that can be tested?
ELEN [110]

A hypothesis is an educated prediction that can be tested.

8 0
3 years ago
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