Help with momentum quiz!!
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Help with momentum quiz!!

[From: ] [author: ] [Date: 11-12-08] [Hit: ]
what is the momentum of an object with the velocity of zero? a. zero b. 1 kilogram c. 2 newtons2. in the equation p=mv the m stand for momentum true or false?......
i need help with these question's i got stuck on these 10. please help. thanks !!

1. what is the momentum of an object with the velocity of zero?
a. zero
b. 1 kilogram
c. 2 newtons

2. in the equation p=mv the m stand for momentum
true or false?

3. momentum increases as the object decelerates
true or false?

4. an object loses energy and momentum in an inelastic collision
true or false

5.momentum will always increase as velocity increases even if mass increases or decreases.
true or false

6. what are the correct SI units for measurments of momentum
a. lilogram meters per secound
b.pounds per miles per hour
c.feet per day
d.none of the above

7. instantaneuose momentum measurements are based on one moment in time
true or false

8. momentum can decrease over the time of there is no change in mass or velocity
true or false

9.any moving object has mass, velocity and
a. weight
b.color
c.color
d.none of the above

10. a bullet can have greater momentum than an elephant standing stil
true or false

-
So many questions...
I will do my best to answer/explain them all.
Just give me some time =)

1.)Since momentum=mass(velocity), if the velocity is 0, the momentum must be 0. Anything times 0 is 0.

2.)momentum=mass(velocity)
p=mv
False

3.) If an object is decelerating, its velocity is also decreasing. Much like if you put on the brakes when driving a car.
False

4.) Momentum if ALWAYS conserved. However, when a collision is inelastic, energy may not be conserved.

This statement is partially true by saying that an object loses energy in an inelastic collision, but it wrong by saying that momentum if lost.
False

5.) Since momentum depends on both mass and velocity, this is False. Imagine the difference between throwing a small pebble and throwing a very large rock. The small pebble may be moving faster, but if you were hit by it, you would barely feel it. The large rock might not be moving fast, but if you were it by it, you would definitely feel it haha.
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