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- 1. Multiple Choice
What is the potential energy of the body?
A) the kinetic energy of the body.
B) the energy of change of velocity of the body.
C) the energy of change of temperature
D) the energy transferred from a hot body to a cold body.
E) energy associated with the motion of body molecules.
- 2. Multiple Choice
The car started moving and reached a speed of 36 m / s in 6 seconds. Acceleration of the car...
A) 5 m / s2
B) 36 m / s2
C) 6 m / s2
D) 0.1 m / s2
E) 2 m / s2
- 3. Multiple Choice
The force required to lift a body of mass 10 kg with an acceleration of 8 m / s2
A) 180 N
B) 80 N
C) 100 N
D) 20 N
E) 8 N
- 4. Multiple Choice
If the ball receives an acceleration of 0.2 m / s2 under the force of 0.1 N, its mass
A) 0.005 kg
B) 0.5 kg
C) 0.05 kg
D) 0.65 kg
E) 50 kg
- 5. Multiple Choice
Under a force of 10 N, the spring elongated by 0.1 m. Spring stiffness
A) 10 N / m
B) 0.01 N / m
C) 0.1 N / m
D) 1 N / m
E) 100 N / m
- 6. Multiple Choice
Time of ascent of a body thrown vertically at a speed of 44 m / s to a height of 100 m
A) 5 s
B) 4.4 s
C) 440 s.
D) 3.4 s
E) 1.02 s.
- 7. Multiple Choice
Elevation of a body thrown vertically and falling to the ground after 8 s
A) 60 m.
B) 80 m.
C) 75 m.
D) 76 m.
E) 90 m.
- 8. Multiple Choice
Period of rotation of an artificial satellite at an altitude of 300 m
A) ≈80 min
B) ≈1.4 hours
C) ≈90 sec
D) ≈1.5 min
E) ≈60 min
- 9. Multiple Choice
The speed given to the body to become an artificial satellite of the earth
A) ≈ 10 km / h
B) ≈8 km / h
C) ≈6 km / h
D) ≈4 km / h
E) ≈2 km / h
- 10. Multiple Choice
Along a horizontal wooden board, a piece of wood weighing 2 kg is pulled by a spring with a stiffness of 100 N / m. If the coefficient of friction is 0.3, the elongation of the spring
A) 0.6 m
B) 0.06 m
C) 6 m
D) 0.06 cm
E) 0.06 mm
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