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miss Akunina [59]
3 years ago
14

3. A snowmobile has a mass of 2.25 x 102 kg. A constant force is exerted on it for 50.0 s. The snowmobile’s initial velocity is

7.00 m/s and its final velocity is 30.0 m/s.
a. What is its change in momentum?
b. What is the magnitude of the force exerted on it?
Physics
1 answer:
Art [367]3 years ago
3 0

Answer:

a. m(v-u)

momentum =5175kgm/s

b. 103.5N

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An elevator filled with passengers has a mass of 1603 kg. (a) The elevator accelerates upward from rest at a rate of 1.20 m/s2 f
Galina-37 [17]

Answer:

T = 17649.03 N = 17.65 KN

Explanation:

The tension in the cable must be equal to the apparent weight of the passenger. For upward acceleration:

T = W_A = m(g+a)\\

where,

T = Tension in cable = ?

W_A = Apparent weight

m = mass = 1603 kg

g = acceleration due to gravity = 9.81 m/s²

a = acceleration of elevator = 1.2 m/s²

Therefore,

T = (1603\ kg)(9.81\ m/s^2+1.2\ m/s^2)\\\\

<u>T = 17649.03 N = 17.65 KN</u>

8 0
3 years ago
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Kobotan [32]

Answer:

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