Objects in motion stay in motion until an opposing force acts upon it. Objects at rest stay at rest until an opposing force acts upon it.
as you can see on our presentation when an object is in motion it will stay in motion until an opposing force acts upon it.
when driving a car if you use the brakes the car will slow down or come to a stop because it is an opposing force.
when riding my bike it is hard to petal when I start off but gets easier when I get going. Newtons first law makes it harder starting off because when an object is at rest it stays at rest and when an object in motion stays in motion until another force acts upon it and the heaver the bike the more force needed to move it.
force = mass x acceleration.acceleration = force / mass . mass = force / acceleration.
newtons second law
To find the force applied to the car by the man we will use F=MxA if the mass is 5 tons and the acceleration is 10m/s/s the force would be 50N.
When i throw this ball in the direction of the ground to find the force we need to multiply the mass by the acceleration. For example if the ball accelerates by 5m/s/s and the mass of the ball is 100g to find the force in newtons we would multiply 5m/s/s x 100g and the force would be 500N.