Question

2.
The speedometer readings of a car at different times are given below:
Time
Speedometer reading
9:25 am 36 km/h
9:45 am 72 km/h
The acceleration of the car is:
(a) 1.8 m/s?
(b) 1/420 m/s
(c) 1/120 m/s
(d) 4.8 m/s​

Answer 1

Answer:

u=36km/h=10m/s

v=72km/h=20m/s

t=45-25=20mins=1200seconds

a=v-u/t

=20-10/1200

=1/120m/s²

Step-by-step explanation:

answer is option c