1）Given the speed of a car increases from 6m/s to 24m/s in 12 seconds.Calculate the acceleration,in m/s2,of the car.
A.2/3 C.1.5
B.3/4 D.1.75
2）The distance between Seremban and Tapah is 234 km.A bus departed from Seremban at 1150 hours and arrived in Tapah at 1505 hours on the same day.Calculate the average speed,in km/h,of the bus.
A.65 C.80
B.72 D.84
3）A car accelerates from 72 km/h to 96 km/h in 12 minutes.Calculate the acceleration,in km/h2,of the car.
A.2 C.90
B.60 D.120
ps:（Please do it step by step,thank you）