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An unbalanced force is necessary for an object to be
Bags at the top of a school van are tied using a string to avoid the effect of
A plate, a ball and a child all have the same mass. The one having more inertia is the
A passenger in a moving train tosses a coin which falls behind him. It means that the motion of the train is
Two equal masses m each moving in the opposite direction with the same speed v collide and stick to each other. The velocity of the combined mass is
The rate of change of momentum with respect to time is measured in
The incorrect option regarding actionreaction pair is
A goalkeeper in a game of football pulls his hands backwards after holding the ball shot at the goal. This enables the goalkeeper to
If force, change in momentum and time are given by F, p and t respectively, then they are related b
According to Newton’s third law of motion, action and reaction
The minimum number of unequal forces that can make zero resultant is
An object of mass 2 kg is sliding with a constant velocity of 4 ms^{1} on a frictional horizontal table. The force required to keep the object moving with same velocity is
A mass M breaks into two pieces in the ratio 1 : 3 while at rest. If the heavier has a speed of v, the speed of the lighter is
An object of mass of 2 kg is sliding with a velocity of 4 ms^{1} on a frictional horizontal surface. The retarding force necessary to stop the object in 1 second is
The two states of motion treated alike by the Newton’s first law, among A, B, C and D are
A : Rest
B : Uniform motion
C : Uniformly accelerated
D : Nonuniformly accelerated
Passengers standing in a bus are thrown outwards when the bus takes a turn suddenly. This happens because of
When a 12 N force acts on 3 kg mass for a second, the change in velocity is (in m/s)
A force of ‘P* N acts on a particle so as to accelerate it from rest to a velocity 'v' m/s. The force 'P’ is then replaced by ‘Q’ N which decelerates it to rest.
Which of the following does not happen? As an automobile accelerates suddenly,
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85 videos416 docs225 tests
