A motor vehicle is brought to rest from a speed of 15ms-1 in 20 seconds. Calculate the retardation.
A
0.75ms-1
B
1.33ms-2
C
5.00ms-2
D
7.50ms-2
Verified Correct Answer: A.
Physical Principles & Numerical Solution
Retardation = \(\frac{u - v}{t}\)
= \(\frac{15 -0}{20}\)
= 0.75ms-1
Source: Myschool Past Questions Archive (Record #27861)