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Which of the following deductions is/are true from Newton's first law of motion?

1) The velocity of a body, in the absence of a resultant force, is always zero.

2) A body is always reluctant to change its state of motion.

3) A resultant force is NOT necessary to produce a change in velocity.

If 1 and 2 are correct.

If 3 only is correct.

If 2 and 3 are correct.

If 1 only is correct.

The air resistance experienced by a moving car can be reduced by:

Driving on a tarred road.

Increasing the speed.

Reducing the speed.

Driving at steady speed.

Which of the following is correct?

A body can be accelerating in a direction opposite to that of its velocity.

It is NOT possible for a body to be at rest and yet have an acceleration.

A change in the velocity of an object implies a change in its speed.

It is possible for the speed of a body to change without the body accelerating.

A hollow plastic ball and a solid metal ball all of the same external radius are both released from rest in a vacuum chamber.

After falling for one minute, they will have the same:

Change in momentum.

Inertia.

Kinetic energy.

Speed.

A body falling in air experiences terminal velocity when its:

Velocity decreases at a constant rate.

Weight is negligible.

Velocity is zero.

Acceleration is zero.