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Lelu [443]
3 years ago
11

A regulatory sign may be used to

Physics
1 answer:
charle [14.2K]3 years ago
4 0

Answer:

a. give limitations for using a particular lane of traffic

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a bus moving at speed of 25m/s beginning to slow at rate 4m/s^2each second how long does it take to stop​
Paladinen [302]

Explanation:

Initial velocity is 25m/s i.e. u. Final velocity would be zero since the bus stopped. It is noted that the bus deccelartion of 4m/s, so the acceleration should be considered negative of 4m/s I.e. 4m/s. So using third law of motion i.e.

v^2 - u^2= 2as

(0)^2 - (25)^2= -2×4×s {Note here I used minus sign in acceleration}

-625 = -8×s

s=625 ÷ 8

s= 125 m

So bus would cover a distance of 125m before coming to rest.

3 0
3 years ago
2. What is the momentum of a 9-kg object moving at -1.5 m/s?/
Alla [95]

Answer:13.5kgm/s

Explanation:

mass=9kg

Velocity=1.5m/s

Momentum=mass x velocity

Momentum=9 x 1.5

Momentum=13.5kgm/s

4 0
4 years ago
If a textbook weighs 19.6 Newtons on Venus what is the acceleration of gravity on Venus
laila [671]

We can't tell from the information in the question.

Weight = (mass) x (acceleration of gravity).

In order to find any of those quantities, we need to know
the other TWO things.

We can't answer the question until we know either the mass
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3 years ago
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