An object is moving in the absence of a net force. which of the following best describes the object's motion?

the object will speed up at a constant rate until it reaches a maximum speed.
the object will continue to move with a constant velocity.
the object will slow down at a constant rate until coming to rest.
the object will stop moving immediately and remain at rest until acted on by a net force.
the object will continue to move with a constant speed, traveling in a circular path.

Explanation:

An object is moving in the absence of a net force. It means the net force acting on the object is zero. According to Newton's second law of motion, the force acting on the object is given by :

According to given condition, F = 0

Mass of the object cannot be equal to 0.

v = u

Final velocity = initial velocity

i.e. the final speed of the ball is equal to its initial speed. It means, the object will continue to move with a constant velocity. Hence, the correct option is (a).

what was the acceleration of the 2 kg cart?

⇒ 16.0 cm/s2

what was the acceleration of the 4 kg cart?

⇒ 8.1 cm/s2

what was the acceleration of the 6 kg cart?

⇒ 5.3 cm/s2