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2 years ago

PLEASE HELP!!

Physics

2 answers:

Svetllana [295]2 years ago

6 0

I’m pretty sure A is the answer

Sholpan [36]2 years ago

6 0

The answer is A aerobic capacity

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A car accelerates uniformly from rest tona speed of 30.0 mi/h in 12.0s. Find the distance the car travels during this time? Find

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Answer:

2.5 mi/s^2

Explanation:

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2 years ago

An object that is accelerating may be

pickupchik [31]

The answer of this question is D. All of the above

Acceleration happen when an obeject change its velocity. It has nothing to do with speed.

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3 years ago

Goals can be big or small? Question 1 options: True False

pav-90 [236]

Answer:

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2 years ago

When a front wheel drops off the roadway you should?

nikdorinn [45]

<span>braking and returning suddenly to the roadway</span>

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3 years ago

A 3.0-kg object moves to the right with a speed of 2.0 m/s. It collides in a perfectly elastic collision with a 6.0-kg object mo

Zinaida [17]

Answer:

The kinetic energy of the system after the collision is 9 J.

Explanation:

It is given that,

Mass of object 1, m₁ = 3 kg

Speed of object 1, v₁ = 2 m/s

Mass of object 2, m₂ = 6 kg

Speed of object 2, v₂ = -1 m/s (it is moving in left)

Since, the collision is elastic. The kinetic energy of the system before the collision is equal to the kinetic energy of the system after the collision. Let it is E. So,

$E=\dfrac{1}{2}m_1v_1^2+\dfrac{1}{2}m_2v_1^2$

$E=\dfrac{1}{2}\times 3\ kg\times (2\ m/s)^2+\dfrac{1}{2}\times 6\ kg\times (-1\ m/s)^2$

E = 9 J

So, the kinetic energy of the system after the collision is 9 J. Hence, this is the required solution.

3 0

3 years ago