Question

A bus starts to move from rest . if its velocity becomes 90km/per hour after 8s. calculate its acceration .

its answers is : 3.13ms-2​

Answer 1

3.13m/s²

Step-by-step explanation:

• first convert from KM to M, 1km-1000m
• then convert from km/h to m/s (speed)

90×1000/3600 note: 1h- 3600s

=25m/s

a=v/t

a= 25m/s ÷ 8s

a= 3.125 / 3.13m/s²