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riadik2000 [5.3K]
3 years ago
7

The club was in contact with a ball, initially at rest, for about 0.0052 s. If the ball has a mass of 55 g and leaves the head o

f the club with a speed of 2.4 ✕ 102 ft/s, find the average force (in kN) exerted on the ball by the club.
Physics
1 answer:
taurus [48]3 years ago
3 0

Answer:

2538.46N

Explanation:

Parameters given:

Initial speed, u = 0 m/s

Final velocity, v = 240 m/s

Time, t = 0.0052 s

Mass of club, m = 55g = 0.055 kg

First we find the acceleration:

a = (v - u)/t

a = (240 - 0)/0.0052

a = 46153.85 m/s²

Average force can then be found:

F = m*a

F = 0.055 * 46153.85

F = 2538.46 N

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What is the de Broglie wavelength of an object with a mass of 2.50 kg moving at a speed of 2.70 m/s? (Useful constant: h = 6.63×
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Answer:

9.82 × 10^{-35} Hz

Explanation:

De Broglie equation is used to determine the wavelength of a particle (e.g electron) in motion. It is given as:

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Given that: h = 6.63 ×10^{-34} Js, m = 2.50 kg, v = 2.70 m/s, the wavelength, λ, can be determined as follows;

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