# What has a greater acceleration?

• George16
In summary, the question is asking whether the acceleration of a car is greater when the accelerator is pushed to the floor or when the brake pedal is pushed down hard. It's not a trick question and it depends on the car, with some cars being able to go from 60mph to 0 in 105ft. However, it's important to consider the sign of acceleration and the fact that vehicle stats are usually stated in terms of distance from 60mph to zero.
George16

## Homework Statement

Is the acceleration of a car greater when the accelerator is pushed to the floor or when the brake pedal is pushed down hard?

What do you think?

Useful data, a Porsche 911 can do 0-60mph in 8secs and 60-0 in 105ft

Is this a trick question? (Hint: think about the sign of acceleration)

Last edited:
I don't think it can be a trick question since, if it were a trick question, the axis aren't defined. (No one said going forward was positive!)

depends on the car. You look at vehicle stats in a magazine, usually they are stated in terms of distancefrom 60mph to zero. Maybe a 100 ft-200 ft. If you have a car that gets to 60mph in 100 feet, you be driving a fuelie.

## What has a greater acceleration?

The acceleration of an object depends on its mass and the force acting on it. The following are the most frequently asked questions about what has a greater acceleration:

## 1. Does a heavier object have a greater acceleration?

Not necessarily. The acceleration of an object is directly proportional to the net force acting on it. So, if a heavier object is subjected to a greater force, it will have a greater acceleration. However, if two objects with different masses are subjected to the same force, the lighter object will have a greater acceleration.

## 2. Is acceleration affected by the direction of motion?

Yes, acceleration is a vector quantity and is affected by the direction of motion. It can be positive, negative, or zero depending on the direction of the force acting on the object.

## 3. How does the surface affect acceleration?

The surface does not directly affect acceleration. However, the type of surface an object is on can affect the amount of force acting on the object, which in turn can affect its acceleration. For example, an object sliding on a frictionless surface will have a greater acceleration compared to the same object sliding on a surface with friction.

## 4. Can acceleration be greater than the force applied?

No, acceleration cannot be greater than the force applied. According to Newton's Second Law of Motion, the acceleration of an object is directly proportional to the net force acting on it. So, the acceleration will always be equal to or less than the force applied.

## 5. How does air resistance affect acceleration?

Air resistance can affect acceleration by acting as a force in the opposite direction of motion. This force can decrease the net force acting on the object and therefore decrease its acceleration. However, the effect of air resistance on acceleration also depends on the shape and mass of the object.

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