Draw conclusion: Did the cart speed up more quickly with the fan on Low or Medium ? Generalize: On Medium the fan provides more force than on Low .

**Table of Contents**show

## How does a fan cart work?

The air pushes the sail forward and the sail pushes the air backward. Since only the sail is attached to the cart, the cart moves forward. Investigation 4: The fan pushes the air forward, and the air pushes the fan backward. Since the fan is attached to the cart, the cart is pushed backward.

## How many forces are applied to the fan cart?

In this situation, there are two forces exerted on the cart: air pushing backward on the fan, and air pushing forward on the sail. These two forces balance each other, and the cart does NOT move!

## Does the mass of the cart affect its movement?

When one cart is weighted, its velocity decreases and the other cart’s velocity increases. As more and more weights are added, the weighted cart’s velocity decreases more and the other cart’s velocity increases more.

## How did doubling the force affect the acceleration of the cart?

The acceleration is equal to the net force divided by the mass. If the net force acting on an object doubles, its acceleration is doubled. If the mass is doubled, then acceleration will be halved.

## How does a fan cart illustrate Newton’s third law for every force in one direction there is an equal force in the opposite direction?

By blowing to the left, the fans exert a force on the cart that pushes it to the right. This illustrates Newton’s third law – Action Reaction: A force in one direction results in an equal force in the opposite direction.

## How do you think the number of fans will affect the cart’s acceleration?

I think the number of fans will affect the cart’s acceleration because the cart is causing it to accelerate faster every time a fan is added. Experiment : Select the BAR CHART tab and turn on Show numerical values. For each of the situations below, record the acceleration of the cart.

## What provided the force that made the cart speed up?

What provided the force that made the cart speed up? The fan.

## What is the relationship between acceleration and force?

Newton’s second law of motion describes the relationship between force and acceleration. They are directly proportional. If you increase the force applied to an object, the acceleration of that object increases by the same factor. In short, force equals mass times acceleration.

## How changing the mass of a cart will affect its acceleration?

How do you think changing the mass of the cart will affect its acceleration? Experiments also show that, for a given net force acting on an object, the acceleration of the object is inversely proportional to its mass. Thus, if the mass of an object is decreased, its acceleration will increase.

## Does the mass of a cart affect its acceleration down a ramp?

Since Force = (Mass)(Acceleration), if you increase the mass of the object, then the force will increase and the cart will roll down the incline faster (IB Data Packet).

## Why does acceleration decrease when mass increases?

The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased.

## Does the acceleration of the cart change the amount of force applied?

As we increase the force on an object the acceleration increases proportionally. Since the mass does not change as the acceleration increases, we can say that force is equal to acceleration.

## What happens to the acceleration of the grocery cart if the force is increased?

Acceleration occurs whenever an object is acted upon by an unbalanced force. The greater the net force acting on the object, the greater its acceleration will be. Newton’s second law of motion summarizes these relationships.

## Which cart is harder to push?

The full shopping cart has more mass so it requires more force to increase the magnitude of acceleration, while the empty shopping cart requires lesser force.

## Why do things move if Newton’s 3rd law is true?

This law states that every action has an equal and opposite reaction. Action and reaction forces are not balanced forces so they don’t cancel out. Action-reaction forces areequal and opposite forces that act on different objects, so they often result in motion.

## What will the motion of the cart be like when there is no force at all?

Answer: it will be on rest….just revise the i law of motion…

## Is Newton’s third law always true?

In every action there is equal and opposite reaction. But this is a one sided law. It is not applicable in all the cases when the force is exerted between two bodies.

## What would happen to the speed of the cart if several bags of cement were added to the cart?

What would happen to the speed of the cart if several bags of cement were added to the cart? The greater mass would slow down or decelerate the cart because the pulling force has remained the same.

## In which direction is the air pushed?

The particles of air push in all directions and the force that is exerted is called air pressure.

## What do you notice about the force and the product of mass and acceleration Ma?

Answer. tAccording to Newton s Second Law of Motion, also known as the Law of Force and Acceleration, a force upon an object causes it to accelerate according to the formula net force = mass x acceleration. So the acceleration of the object is directly proportional to the force and inversely proportional to the mass.

## What causes objects to slow down when they are no longer pushed?

Friction is a force that opposes the motion of objects; friction can cause objects to slow down. Air resistance is a type of friction.

## How does force affect motion?

Forces affect how objects move. They may cause motion; they may also slow, stop, or change the direction of motion of an object that is already moving. Since force cause changes in the speed or direction of an object, we can say that forces cause changes in velocity. Remember that acceleration is a change in velocity.

## What will happen to the object if it is not moving?

An object at rest has zero velocity – and (in the absence of an unbalanced force) will remain with a zero velocity. Such an object will not change its state of motion (i.e., velocity) unless acted upon by an unbalanced force.

## What are 5 examples of Newton’s second law?

- 1· Try to move an object.
- 2· Pushing a car and a truck.
- 3· Racing Cars.
- 4· Rocket launch.
- 5· Kick the ball.
- 6· Car crash.
- 7· Two people walking.
- 8· Object thrown from a height.