Forces and Interactions Unit 2

Forces always occur in

Why does this balloon rise?

The law of inertia applies to

The pair of forces that could represent x and y components of the force acting on P are:

According to Newton's third law, if you push gently on something, it will push

The force exerted by the ground on the bridge at the west end is ____ tons.

Boy&dog walk, dog sees squirrel&runs, boy pulls,dog pulls harder,moving boy. What says it best?

A change in the gravitational force acting on an object will affect the object’s

If the box is moving, ____.

The force that resists the motion of objects or surfaces in contact with one another is called

What force acts against the upward motion of this balloon?

One object has twice as much mass as another object. The first object also has twice as much

Which of the following is the gravitational force acting on the balloon?

Which of the following is the cause of an acceleration?

If the box will not move, ____.

When an object reaches terminal velocity its acceleration is

What causes a moving object to change direction?

A car being pulled by a towing cable. What is gravitational force ?

Nancy weighs 480N, lifts a 60N box at constant speed.What is the reaction force?

A woman weighing 550 N sits on the floor. She exerts a force on the floor of

Every action there is an equal but opposite reaction is which of Newton's laws of motion?

A girl pulls on a 10-kg wagon with a constant force of 20 N. What is the wagon's acceleration?

A bag of sports equipment has a mass of 10.0 kilograms and a weight of

A net force of 6.8 N accelerates a 31 kg car across a parking lot. What is the acceleration?

Friction is a force that always acts

If the stationary box begins to move, ____