In 1687, Isaac Newton created three laws of motion to describe the relationship between a body and the forces acting upon it, and how the body moves in response to those forces.
If an object is at rest the forces acting on it are...?
When the resultant force on an object is zero, which of the following could describe its motion?
It has constant acceleration
It has reached constant velocity
It has changing velocity
What is the unit of force?
What does Newton’s First Law mean?
Resultant force causes acceleration
Action force = reaction force
Balanced forces can cause constant velocity
Newton's Second Law of Motion can be summarised by which equation?
F = a ÷ m
F = m ÷ a
F = ma
What is the unit of mass?
Find the resultant force that acts on a van of mass 2400 kg, if it accelerates at 3.5 m/s2.
A car has a mass of 1500 kg, and an engine that can deliver a force of 6000 N. Find the acceleration of the car.
A boat travels through water at a constant velocity. The forward thrust of the engine is 350 N. What is the drag of the water?
Two forces act on an object. 12 N acts to the right and 5 N to the left. What is the resultant force?
17 N right
7 N right