PHYSICS MIDDLE SCHOOL

A soccer ball collides with another soccer ball at rest. the total momentum of the ballsa) is zero
b) increased
c) remains constant
d) decreases

Answers

Answer 1
Answer:

I am pretty sure the answer is C.

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10. A girl pulls a wagon along a level path for a distance of 44 m. The handle ofthe wagon makes an angle of 22° above horizontal. If she pulls on the
handle with a force of 87 N, how much work is done?

Answers

The work done on the wagon is 3549 J

Explanation:

The work done by a force when moving an object is given by

W=Fd cos \theta

where:

F is the magnitude of the force

d is the displacement

\theta is the angle between the direction of the force and of the displacement

In this problem we have the following data:

F = 87 N is the magnitude of the force

d = 44 m is the displacement of the wagon

\theta=22^(\circ) is the angle between the direction of the force and the displacement

Substituting, we find the work done

W=(87)(44)(cos 22^(\circ))=3549 J

Learn more about work:

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Answers

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Answers

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Which of the following is not an example of potential energy? chemical energy, gravitational energy, thermal energy, nuclear energy

Answers

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Explanation:

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Answers

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