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qwelly [4]
3 years ago
12

7. A 50 kg pole vaulter running at 10 m/s vaults over the bar. Her speed when she is over the bar is 1.0 m/s. Neglect air resist

ance, as well as any energy absorbed by the pole, and determine her height as she crosses the bar.
Physics
2 answers:
Marina86 [1]3 years ago
5 0

Answer:

5.1 m

Explanation:

Initial kinetic energy = final kinetic energy + final potential energy

KE = KE + PE

½ mv² = ½ mv² + mgh

½ v² = ½ v² + gh

½ (10 m/s)² = ½ (1.0 m/s)² + (9.8 m/s²) h

h = 5.1 m

luda_lava [24]3 years ago
4 0

Answer:  5.05 m

Explanation:

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erica [24]
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5 0
3 years ago
PLS HELP!!! A 1200-kg whale swims horizontally to the right at a speed of 6.0 m/s. It suddenly collides directly with a stationa
Fittoniya [83]

Answer:

7200 kg.m/s

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7 0
3 years ago
An object in a certain direction with an acceleration in the perpendicular direction
geniusboy [140]

Answer:

An object moving in certain direction with an acceleration in the perpendicular direction. The above condition is possible . Example of such situation in life would be when stone tied to a string whirling in a circular path

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3 0
3 years ago
Lower chamber of Congress has how many members?
Molodets [167]

Answer:435 Representatives

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Please choose the answer that describes the scientific notation for 5,098,000. 
galben [10]
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3 years ago
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