the force on an object is the product of its mass and acceleration
Newton's first law of motion states that if the resultant force acting on a stationary object is zero, then the object will remain stationary
If the resultant force acting on a moving object is zero, then the object will continue moving in the same direction at the same speed, with the same velocity
The velocity of an object will only change if a resultant force is acting on the object
Resistive forces, such as friction with the air and friction with the road, act as equal and opposite forces to maintain a constant speed of a moving object
A resultant force of 50 Newtons acting on a stationary object will cause the object to accelerate in the direction of the force
A resultant force of 50 Newtons acting on a moving object will cause the object to decelerate, leading to a slowdown
A resultant force can also change an object's direction, causing it to accelerate in a different direction