Acceleration

Question 1

Acceleration

Answer 1

Rate of change in velocity for unit in time

(S.I unit m/s^2, ms-2, m/s/s)

Question 2

Acceleration formula

Answer 2

final velocity - initial velocity / time

Or: 2 x distance / time^2

Vector quantity

Question 3

Positive acceleration

Answer 3

when final velocity of an object is greater than initial velocity

speed increases (V>u)

Question 4

Negative acceleration

Answer 4

When final velocity of an object is less than initial velocity

Speed decrease (V<u)
Called: retardation/deacceleration, has (-) sign

Question 5

Zero acceleration

Answer 5

When final and initial velocity of object equal

Uniform velocity (V=u)
Object still moving with no change in speed