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Oksana_A [137]
2 years ago
12

A force of 15 newtons is used to push a box along the floor a distance of 3 meters. How much was done?

Physics
2 answers:
bezimeni [28]2 years ago
7 0

Answer:

45 J

Explanation:

The equation for work is:

Work=Force*Distance

We can substitute the given values into the equation:

Work=15N*3m\\Work=45Nm\\Work=45J

IRISSAK [1]2 years ago
6 0

Answer:

45 J

Explanation:

w =fd

w = 15(3)

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A 55.6 kg ice skater is moving at 1.73 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole.
GarryVolchara [31]

Answer:

The force exerted by the rope on her arms is 273.7 N = 0.274 kN

Explanation:

Step 1: Data given

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Step 2:

Force exterted by the horizontal rope is the centripetal force acting on theice skater:

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7 0
3 years ago
A tennis ball is thrown straight up into the air with an initial velocity of 38 m/s.
geniusboy [140]

Answer:

a) 3.9s

b)74m

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a) v=u+at

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t=3.9s

b) s=ut+1/2at²

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