Question 1

What is the name given to the distance a vehicle travels to safely come to a stop after the driver has spotted a hazard?

Accepted Answer

stopping distance

Answer

braking distance

Answer

thinking distance

Question 2

What is the name given to the distance a vehicle travels during driver’s reaction time?

Accepted Answer

thinking distance

Answer

braking distance

Answer

stopping distance

Question 3

What is the name given to the distance a vehicle travels once brakes have been applied?

Accepted Answer

braking distance

Answer

thinking distance

Answer

stopping distance

Question 4

What is the relationship between stopping distance, thinking distance, and braking distance?

Accepted Answer

$\begin{matrix}
	ext {stopping} \
	ext {distance}
\end{matrix}= 	ext {thinking distance + braking distance}$

Answer

$\begin{matrix}
	ext {stopping} \
	ext {distance}
\end{matrix}= 	ext {thinking distance / braking distance}$

Answer

$\begin{matrix}
	ext {thinking} \
	ext {distance}
\end{matrix}= 	ext {stopping distance + braking distance}$

Answer

$\begin{matrix}
	ext {braking} \
	ext {distance}
\end{matrix}= 	ext {thinking distance + stopping distance}$

Question 5

Does the speed of a vehicle have a bigger effect on braking distance or thinking distance?

Accepted Answer

braking distance

Answer

thinking distance

Question 6

Which distance is proportional to the speed of the vehicle?

Accepted Answer

thinking distance

Answer

braking distance

Answer

stopping distance

Question 7

Which distance increases by an increasing amount as speed increases?

Accepted Answer

braking distance

Answer

stopping distance

Answer

thinking distance

Question 8

Which of these is NOT a factor that can affect the braking distance of a vehicle?

Accepted Answer

experience of the driver

Answer

road conditions

Answer

condition of tyres and brakes

Answer

speed of the vehicle

Question 9

What is the definition of one joule of work?

Accepted Answer

the work done when $	ext {1 N}$ of force causes $	ext {1 m}$ displacement

Answer

the work done when $	ext {1 N}$ of force causes $	ext {1 mm}$  displacement

Answer

the work done when $	ext {10 N}$  of force causes $	ext {1 m}$ displacement

Answer

the work done when $	ext {10 N}$ of force causes $	ext {1 km}$  displacement

Question 10

Which force increases the temperature of a vehicles' brakes when the brakes are applied?

Accepted Answer

friction

Question 11

What is the energy transfer that explains why the brakes heat up when used?

Accepted Answer

the kinetic energy store of the car transfers energy to the thermal energy store of the brakes due to the work done by the frictional force

Answer

the mechanical energy store of the car transfers energy to the kinetic energy store of the brakes due to the work done by the frictional force

Answer

the kinetic energy store of the car transfers energy to the thermal energy store of the brakes due to the work done by the gravitational force of the brakes

Answer

the thermal energy store of the car transfers energy to the thermal energy store of the brakes due to the work done by the gravitational force of the brakes

Question 12

Which of these points does NOT describe what may happen if the braking force of a vehicle is very large?

Accepted Answer

the car may stop too slowly leading to accidents

Answer

the driver may lose control of the vehicle

Answer

brakes may overheat

Answer

the car may skid

Question 13

What is the law of conservation of momentum?

Accepted Answer

in a closed system, the total momentum before an event is equal to the total momentum after it

Answer

in a closed system, the total momentum before an event is greater than the total momentum after it

Answer

in a closed system, the total momentum before an event is less than the total momentum after it

Answer

in an open system, the total momentum before an event is equal to the total momentum after it

Question 14

What does $m\Delta v$ stand for?

Accepted Answer

change in momentum

Answer

change in distance in metres for a given velocity

Answer

change in velocity for a given mass

Answer

change in mass at a given voltage

Question 15

What is the formula that shows the relationship of force acting on an object and the rate of change of its momentum?

Accepted Answer

$\begin{matrix} 	ext {force acting} \ 	ext {on an object} \end{matrix}= 	ext {change of momentum} / 	ext {time taken}$

Answer

$\begin{matrix} 	ext {force acting} \ 	ext {on an object} \end{matrix}= 	ext {change of momentum} $

Answer

$\begin{matrix} 	ext {force acting} \ 	ext {on an object} \end{matrix}= 	ext {change of momentum}$ x $	ext {time taken}$

Answer

$\begin{matrix} 	ext {change of} \ 	ext {momentum} \end{matrix}= 	ext {force acting on an object} / 	ext {time taken}$

Question 16

Which of these examples of safety features that work by increasing the time taken for the change in momentum are NOT found in a car?

Accepted Answer

crash mats

Answer

crumple zones

Answer

air bags

Answer

seat belts

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