3 years ago

Action and reaction force always cancel each other. True or False.

1 answer:

5 0

False. They have same magnitude and opposite direction but they never cancel as each of them does the action on the other body, and for the forces to cancel out they need to act ob the same body.

Hope this helps!

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A space shuttle orbits Earth at a speed of 21,000 km/hr. How far does it go in 3.5 hrs?

inn [45]

Since it travels at 21,000 kilometers per hour, you'd just multiply that with 3.5 to get 73,500. So your answer is 73,500.

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4 years ago

When a jet plane is cruising at high altitude, the flight attendants have more of a "hill" to climb as they walk forward along t

anygoal [31]

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DiKsa [7]

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1. Spring

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3 years ago

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Daniel [21]

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Its said above.

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3 years ago

A 5.0-kg box is pulled by a horizontal force F applied to the top of the box. When the box meets a low doorstep, it begins to ro

NARA [144]

Answer:

the required minimum magnitude of the force F is 21 N

Explanation:

Given the data in the question,

m = 5 kg

width = 60 cm

height = 80 cm

Let force is F represent in the image below,

so when the block about to rotate normal shifted to edge of cube

mg(w/2) = Fh

F = mg(w/2) / h

we know that g = 9.8 m/s²

we substitute

F = (5 × 9.8 ( 60/2)) / 70

F = (5 × 9.8 × 30 ) / 70

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3 years ago