Physics chapter 2 Flashcards
1
Q
Definition of speed
A
Distance travelled by an object per unit of time
2
Q
Definition of velocity
A
Speed of an object in a given direction
3
Q
Definition of Acceleration
A
rate of change in velocity per unit of time
4
Q
Properties of velocity
A
- It tells the direction of object
- It has a vector quantity
- It can be both positive and negative
5
Q
Properties of speed
A
- It tells the speed of and object
- It is a scalar quantity
- Speed is always positive
6
Q
Formula for speed
A
Distance/time
7
Q
Definition of distance
A
The total path covered by the body and displacement
8
Q
Definition of displacement
A
The shortest path covered by the body
9
Q
Difference of Distance and Displacement
A
- Distance is a scalar quantity while Displacement is a vector quantity
- Distance is total path covered while displacement is the shortest path covered
- Distance can never be zero but displacement can
- Distance can never be negative while Displacement can be both positive and negative
- Distance doesn’t decrease with time whereas displacement decreases
- Distance is always equal or greater than the displacement
10
Q
Formula for accelaration
A
Final velocity - Initial velocity / Time
11
Q
How to find speed in a distance-time graph
A
Change in distance / Change in time
12
Q
How to find Acceleration in speed-time graph
A
Change in velocity / Change in time
13
Q
Acceleration is the ——— travelled by an object per unit of time
A
Velocity
