# P2.2.3 Force and Acceleration + P2.2.4 On the Road

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• Created on: 04-05-14 18:05
How does the acceleration of an object depend on the size of the resultant force?
The bigger the resultant force on an object is, the greater its acceleration is.
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What effect does the mass of the object have on its acceleration?
The greater the mass of an object is, the smaller its acceleration is for a given force.
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How do we calculate the resultant force on an object from its acceleration and its mass?
Resultant force (N) = mass (kg) x acceleration (m/s)
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What happens to the acceleration of an object as the resultant force on it decreases?
Acceleration decreases.
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What forces oppose the driving force of a car?
Friction and air resistance oppose the driving force of a car.
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What does the stopping distance of a car depend on?
The stopping distance of a car depends on the thinking and braking distance.
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How can you calculate the stopping distance of a car?
Stopping distance = thinking distance + braking distance
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What factors can increase the braking distance of a vehicle?
High speed, poor weather conditions and poor maintance all increase the braking distance.
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What factors can increase the thinking distance of a vehicle?
Poor reaction time and high speed both increase the thinking distance.
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## Other cards in this set

### Card 2

#### Front

What effect does the mass of the object have on its acceleration?

#### Back

The greater the mass of an object is, the smaller its acceleration is for a given force.

### Card 3

#### Front

How do we calculate the resultant force on an object from its acceleration and its mass?

### Card 4

#### Front

What happens to the acceleration of an object as the resultant force on it decreases?

### Card 5

#### Front

What forces oppose the driving force of a car?