Answer:
is the mass of librarian.
Explanation:
Given:
- mass of the system,
- velocity of librarian relative to the ground,
- velocity of the cart relative to the ground,
N<u>ow using the principle of elastic collision:</u>
Net momentum of the system is zero.
is the mass of librarian.
Answer:
I=1,2•10³ kg•m/s
Explanation:
v¹=3.5m/s
vf=5m/s
v=5-3.5=1.5m/s
I=p
I=mv=850•1.5=1275 kg•m/s=1,2•10³ kg•m/s
Answer:
120 miles
Explanation:
Speed = distance traveled/ time taken.
Distance traveled = speed * time taken
Speed = 40 miles per hour, time = 3 hours.
Distance = 40*3
The train's traveled distance is 120 miles.
Answer:
c
Explanation:
because it is made out of metel
Answer:
The smallest piece of a substance is an atom.
Explanation:
Atoms. An atom is the smallest unit of a pure substance or element that can exist and still retain the properties of the original substance or element.
The smallest piece that doesn't retain the properties is a quark
Hope I helped you and have a great day!
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