law of inertia. Object in motion stays in motion or an object at rest stays at rest UNLESS acted on by a FORCE.
You push a box and it doesn't move, what force is opposing you?
F=ma. Force equals the product of an object’s mass and acceleration. (or Acceleration is equal to the force and inversely proportional to mass)
Action/Reaction law. For every action there is an equal and opposite reaction.
An object has a mass of 8.0 kg and is accelerating at a rate of 5 m/s. What is the force of the object?
What is the sum of the forces on an object that is NOT balanced?
A 15 kg ball accelerates at 20 m/s2 what force was exerted on the ball?
An object is being pushed with a force of 50 Newtons, and has a mass of 25 kg. What is the acceleration of the object?
2 m/s2
What is a force that opposes motion?
A car's engine produces a force of 1500 N and it accelerates at 2.5 m/s2. What is its mass?
A boy pushes forward a cart of groceries with a total mass of 40.0 kg. What is the acceleration of the cart if the net force on the cart is 60.0 N? (use the formula F=ma)