Newton"s Law

_____ is a quantitative measure of the interaction between two bodies.

A type of force exerted on an object by a rope, cord, etc.

Newton’s first law states that when the vector sum of all forces acting on a body (the net force) is

zero, the body is in __________ and has zero acceleration.

Draw an example of Net Force of a body is zero.

The ______ of a body is the gravitational force exerted on it by the earth.

Newton’s third law states that when two bodies interact, they exert forces on each other that at each

instant are equal in magnitude and opposite in direction. These forces are called?

• Inertia and momentum

• attack and counter attack

• Normal and friction force

• action and reaction

A diagram showing the chosen body by itself, “free” of its surroundings, with vectors drawn to show the magnitudes and directions of all the forces applied to the body by the various other bodies that interact with it.

When a body is sliding over the surface, the friction force is called?

• static

• kinetic

• rolling

• actual static

What is the direction of the Force on a uniform circular motion?

• Towards the center

• Outside the center

• Tangent with the motion

• Perpendicular to the velocity vector

The possible static friction force is approximately equal to the magnitude 𝑛 of the normal force multiplied by the coefficient of static friction 𝜇s .