A force that opposes the motion of an object through the air.
5 of 18
What is the thinking distance?
The distance you travel before you start applying the brakes.
6 of 18
What is the distance you travel while the car is decelerating to rest?
The braking distance .
7 of 18
What factors affect the reaction time when driving?
If you are tired, if you have been drinking alcohol or taking drugs, or if the visibility is poor.
8 of 18
When is a collision partially elastic?
When some of the movement energy is 'lost' as it is converted to heat and sound.
9 of 18
What is the formula for the moment of a force?
Moment = force x perpendicular distance from pivot
10 of 18
What is the condition for what is the condition for balance?
Sum of the clockwise moments = sum of anticlockwise moments
11 of 18
What does the size of the gravitational force between objects depend on?
The size of the masses involved and the distance between the masses.
12 of 18
What is the formula for acceleration?
Change in velocity ÷ time taken
13 of 18
What is Hook's law?
The increase in length of a spring is directly proportional to the force pulling on it . If stretch beyond the elastic limit, the spring will not return to its original length.
14 of 18
What does a straight line indicates a distance time graph?
Constant speed.
15 of 18
What does the area under a velocity time graph indicate?
The distance travelled.
16 of 18
Why are speed and distance travelled scalar quantities?
Comments
No comments have yet been made