Answer:
a = 0.63 m/s²
Explanation:
The car is move with uniformly accelerated circular movement , then:
Centripetal acceleration ac is calculated as follows:
ac = v² /R
v = 60 km/h = 60000m / 3600 s = 16.67 m/s
ac =(16.67m/s )² / 450 m
ac = 0.617 m/s²
Tangential acceleration (at) :
at = 0.12 m/s²
Magnitude of the acceleration of the car to v= 60 km/h:
[tex]a=\sqrt{(ac)^{2}+(at)^{2 }[/tex]
[tex]a= \sqrt{(0.617)^{2} +(0.12)^{2} }[/tex]
a = 0.63 m/s²
