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Nata [24]
3 years ago
9

Determine the kinetic energy of a 1000-kg roller coaster car that is moving with a speed of 20.0 m/s

Physics
1 answer:
erastovalidia [21]3 years ago
8 0

Answer:

2*10^{5}

Explanation:

Kinetic energy = \frac{1}{2} M V^{2}

M is mass

V is velocity

K.E. = \frac{1}{2} * 1000 * 20^{2}  

K.E. = 2*10^{5}

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Answer:

3/7 ω

Explanation:

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3Iω = 7I ωnet

ωnet = 3/7 ω

The final angular velocity will be 3/7 ω counterclockwise.

7 0
3 years ago
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Two protons are released from rest, with only the electrostatic force acting. Which of the following statements must be true abo
ycow [4]

Answer:

(A)

Explanation:

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3 years ago
A 0.45kg baseball is pitched towards home plate at 20 m/s. The ball is hit back towards the pitcher with a speed of 30 m/s. What
Inessa05 [86]

Answer:

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3 0
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Which statement is true of a glass lens that diverges light in air?
Arisa [49]
C it is uniformly thick
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