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Gemiola [76]
3 years ago
11

an object is moving east with a constant speed of 20m/s for 4 seconds.What is the object's acceleration

Physics
1 answer:
Tamiku [17]3 years ago
5 0

The objects acceleration is 6m/s.

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ExtremeBDS [4]

Answer:

B. 14.4 N

Rotational speed (Angular Velocity) = 2

The Radius of the circle = 1.2 m

Velocity = Angular velocity × radius = 2×1.2 = 2.4 m/s

Centripetal force= mv²/r = 3 × 2.4×2.4/1.2 = 3 × 2.4 × 2

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7 0
3 years ago
If the mass of a basketball is 18 times that of a tennis mass, can they ever have the same momentum? Explain your answer
Readme [11.4K]

Answer:

Yes

Explanation:

Yes. The momentum is the same when the speed of the tennis ball is 18 times greater than the speed of the basketball and the velocities of both objects are in the same direction.

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Is this a true or false question?
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David rowed a boat upstream for three miles and then returned to point he started from. The entire journey took four hours. The
frez [133]
Upstream speed = S - 1
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= S

S = 6 miles / 4 hours
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3 years ago
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No. The correct answer is A.

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