If the force applied to an object is in the direction of its motion, its speed decreases.
False
A force applied to an object may change its speed. If the force applied on the object is in the direction of its motion, the speed of the object increases. If the force is applied in the direction opposite to the direction of motion, then it results in a decrease in the speed of the object. For example, when the accelerator is applied to a vehicle, the speed of the vehicle increases.