According to Newton's first law,
A) an applied force always causes a change in the speed of an object.
B) an applied force always causes a change in the direction of travel of an object.
C) the rate of change of speed of an object is larger,the larger the force acting on the object.
D) if no force is acting on an object,then the object's speed and direction of travel will both be constant.

Question

Quizplus · Accepted Answer

The first law of motion, also known as the law of inertia, states that an object at rest will remain at rest and an object in motion will remain in motion with a constant velocity (i.e., constant speed in a straight line), unless acted upon by an external force. Therefore, if no force is acting on an object, its speed and direction will both be constant.

According to Newton's First Law