Question The potential energy of a person is 980 Joule who climbs a flight with stairs 10 m high at constant speed, then it mass is equal .. .... |(a) | 5 kg |(b) 10 kg (c) 20 kg |(d) 30 kg Questjon 35 The total mechanical energy of a body in an isolated system and involves conservative force is conserved. (a) True |(b) False Olestion What is gravitational potential energy of a 5 Kg book 10 m above the floor? (d) 690 Joule (a) 400 Joule |(b) 490 Joule (c) | 600 Joule

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Chapter1: Units, Trigonometry. And Vectors
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Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Quèstion
34
The potential energy of a person is 980 Joule who climbs a flight with stairs 10m
high at constant speed, then it mass is equal ...
|(a)5 kg
(b) 10 kg
(c) 20 kg
(d) 30 kg
Questjon
The total mechanical energy of a body in an isolated system and involves
conservative force is conserved.
(a) True
(b) False
Olfestion
What is gravitational potential energy of a 5 Kg book 10 m above the floor?
(a) 400 Joule
(b) 490 Joule
(c) 600 Joule
(d) 690 Joule
Question
If the momentum p =21+ 4t-3 kg.m/s, find the force F at t-1 sec.
(c) 12 N
(d) 14 N
(a) 8N
(b) 10 N
Question
The magitude of the net force acting on the object in the figure is...
F4N
(a) |SN
|(b) 6N
|(c) 7N
(d) 8N
Question
39
Two masses are suspended by a cord as shown in the figure below. If
mi = 5 kg, and m2 =15 kg. Find the acceleration of the mass m2?
(a) 4.9 m/s
|(b) 7.9 m/s
(c) 8.9 m/s
(d) 9.9 m/s
FQuestion
40
is the rate at which work is done.
(a) Power
|(b) Energy
(c) Work
(d) Force
Transcribed Image Text:Quèstion 34 The potential energy of a person is 980 Joule who climbs a flight with stairs 10m high at constant speed, then it mass is equal ... |(a)5 kg (b) 10 kg (c) 20 kg (d) 30 kg Questjon The total mechanical energy of a body in an isolated system and involves conservative force is conserved. (a) True (b) False Olfestion What is gravitational potential energy of a 5 Kg book 10 m above the floor? (a) 400 Joule (b) 490 Joule (c) 600 Joule (d) 690 Joule Question If the momentum p =21+ 4t-3 kg.m/s, find the force F at t-1 sec. (c) 12 N (d) 14 N (a) 8N (b) 10 N Question The magitude of the net force acting on the object in the figure is... F4N (a) |SN |(b) 6N |(c) 7N (d) 8N Question 39 Two masses are suspended by a cord as shown in the figure below. If mi = 5 kg, and m2 =15 kg. Find the acceleration of the mass m2? (a) 4.9 m/s |(b) 7.9 m/s (c) 8.9 m/s (d) 9.9 m/s FQuestion 40 is the rate at which work is done. (a) Power |(b) Energy (c) Work (d) Force
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