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Molodets [167]
3 years ago
7

At the end of the Shock Wave roller coaster ride, the 6000-kg train of cars (includes passengers) is allowed from a speed of 20

m/s to a speed of 5 m/s over a distance of 20 meters. Determine the braking force required to slow the train of cars by this amount.
Physics
1 answer:
Angelina_Jolie [31]3 years ago
6 0

Answer:

56250 N

Explanation:

mass, m = 6000 kg

initial speed, u = 20 m/s

final speed, v = 5 m/s

distance, s = 20 m

Use third equation of motion

v^{2}=u^{2}+2as

5 x 5 = 20 x 20 + 2 a x 20

25 = 400 + 40 a

a = - 9.375 m/s^2

Braking force, F = mass x acceleration

F = 6000 x 9.375

F = 56250 N

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3 years ago
A light wave has a wavelength of 450 nanometers. What is the frequency of this light?
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Answer:

Frequency, f=6.67\times 10^{14}\ Hz

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3 years ago
If a particle undergoes shm with amplitude 0.21 m, what is the total distance it travels in one period?
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A person is lying on a diving board 3.50 m above the surface of the water in a swimming pool. She looks at a penny that is on th
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