Test: Motion - SSC CGL MCQ

The amount of friction between two surfaces is affected by factors such as surface area and temperature. Increased surface area and higher temperatures generally lead to higher friction.

Newton's second law of motion states that the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass. The formula is F = ma, where F is the force, m is the mass, and a is the acceleration.

Newton's second law of motion states that the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass. The formula is F = ma, where F is the force, m is the mass, and a is the acceleration.

Terminal velocity is the constant velocity reached by a falling object when the drag force (air resistance) becomes equal to the weight of the object. At this point, the net force acting on the object is zero, resulting in no further acceleration.

Momentum is calculated by multiplying an object's mass by its velocity. In this case, momentum = 2 kg × 4 m/s = 8 kg m/s.

The law of conservation of momentum is applicable to collisions between objects. It states that the total momentum of a system of objects remains constant before and after the collision, provided no external forces act on the system.

Projectile motion refers to the curved path followed by an object launched into the air, under the influence of gravity. A ball thrown vertically upwards and then coming back down follows a projectile motion trajectory.

Circular motion refers to the motion of an object around a fixed point, such as the swinging of a pendulum. It involves constant changes in direction but maintains a fixed distance from the center.

The force of gravity acting on an object is known as weight. It depends on the mass of the object and the acceleration due to gravity.

Frictional force is an example of a contact force. It arises when two surfaces are in contact and resists the relative motion between them.