If a car is moving to the left with constantvelocity, one can conclude that

there mustbe no forces applied to the car.
the netforce applied to the car is directed to the left.
the netforce applied to the car is zero.
there isexactly one force applied to the car.

The net force applied to the car is zero.

Explanation:

We are given that a car is moving to the left with constant velocity.

When the car moving with constant velocity

Then, the final velocity=Initial velocity

Change in velocity=Final velocity- initial velocity=0

When change in velocity is zero then , acceleration of car

When acceleration is zero then, By Newtons second law

The net force applied on the car will be zero.

Option C:The net force applied to the car is zero.

because growing process had stoped after 4-5 year

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.