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Vladimir79 [104]
3 years ago
10

Lila is a track and field athlete. She must complete four laps around a circular track. The track itself is a 400 meter track an

d it took her 6 minutes total to complete. Which best describes her speed and velocity? (There are 60 seconds in 1 minute.) A. Her speed is 4.4 m/s, and her velocity is 0 m/s. B.Her speed is 1.1 m/s, and her velocity is 0 m/s. C.Her speed is 0 m/s, and her velocity is 2400 m/s. D. Her speed is 4.4 m/s, and her velocity is 4.4 m/s.
Physics
1 answer:
trapecia [35]3 years ago
6 0

Answer: A. Her speed is 4.4 m/s, and her velocity is 0 m/s.

Explanation: i took the test on edgenuity

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A 10 g bullet moving horizontally with a speed of 2000 m/s strikes and passes through a 4.0 kg block moving with a speed of 4.2
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Answer:

The answer is "512 J".

Explanation:

bullet mass m_1 = 10 g= 10^{-2} \ kg\\\\

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Let v_1 will be the bullet speed after collision:

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The kinetic energy of the bullet in its emerges from the block

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A fruit bat falls from the roof of a cave. We know that her potential energy was
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Answer:

v = 15.65 m/s

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600 J = 0 + 1/2  4.9 (v^2)

v^2 = 600 * 2 / 4.9 = 244.9

v = 15.65 m/s

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