Kinematics 2 : Acceleration

Acceleration is the rate of change of (a)  

• velocity
• distance
• displacement

Acceleration is a ​ (a)   quantity

• vector
• scalar

SI unit of acceleration is

An object accelerates when its velocity ​ (a)  

• changes
• constant

Uniform acceleration is the constant rate of change of velocity. The formula of acceleration is ....

where  u = initial velocity;

v = final velocity;

tu = time at which an object is at initial velocity u;

tv = time at which an object is at final velocity v;

∆v = change in velocity;

∆t = time interval between tu and tv.

Uniform motion is motion with ​ (a)   velocity. in other word, the ​ (b)   of object is zero (0) m/s²

• constant
• canges
• increas
• decrease
• acceleration
• velocity
• speed

​ Acceleration occurs when

velocity ​ (a)   or ​ (b)   acceleration

• deceleration
• increases
• decrease
• positive
• negative

​ Deceleration refers only to when velocity ​ (a)   or ​ (b)   acceleration

• decrease
• increase
• negative
• positive

Uniform acceleration is the ​ (a)   rate of change of velocity

• constant
• changes

look at the picture!

the picture shows us about ​ (a)  

• uniform acceleration
• uniform deceleration
• accelerated motion
• decelerated motion