Question

On the way to school, the bus speeds up from 20 m/s to 36 m/s in 4 seconds. What distance

does the bus cover in this time frame?
A. 64 m
B. 112 m
C. 80 m
D. 144 m

Answer 1

Answer B. 112 m



Explanation

initial velocity u = 20 m /s
final velocity v = 36 m /s
time taken t = 4 s
acceleration = (v - U) / t
= (36 - 20) / 4
a=4m/s2
from the formula
7-u2=2as , sis distance covered
putting the values
362-202=2×4×s
1296 - 400 = 8 x S
S= 112 m