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- Multiple ChoicePlease save your changes before editing any questions.
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.
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
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.
- Multiple ChoicePlease save your changes before editing any questions.
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.
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
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