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Ganezh [65]
3 years ago
6

If a girl is running along a straight road with a uniform velocity 1.5 m /s find her acceleration ​

Physics
1 answer:
Phoenix [80]3 years ago
6 0

Answer:

As velocity is uniform then acceleration will be zero.

Explanation:

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A student weighing 700 N climbs at constant speed to the top of an 8 m vertical rope in 10 s. The average power expended by the
nasty-shy [4]

Answer:

The average power the student expended to overcome gravity is 560W, Watts is a units of work it is Joules /time or kg*m^{2}/ s^{3}

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F= m*g*h \\m*g= 700N\\F= 700N*h\\F=700N*8m\\F= 5600 N*m \\F=5600 J

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Work= \frac{5600 J}{10s} = \frac{5600 \frac{kg*m^{2} }{s^{2} } }{10 s}  \\Work= 560\frac{kg*m^{2} }{s^{3} } \\Work =560 W

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3 years ago
A person jogs for 4.0 km in 32 mins,then 2.0km in 22mins,and finallu 1.0 km in 16 mins.whqt is the joggers average speed in km p
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Average speed = (total distance covered) / (time to cover the distance)

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