Answer:
Julie's car.
Explanation:
The acceleration of an object is equal to the rate of change of velocity. It can be given by :
[tex]a=\dfrac{v-u}{t}[/tex]
Jodi's car moves at a constant 60 mph for 10 s.
Julie's car transitions from a speed of 20 mph to a speed of 30 mph for the same time interval i.e. 10 s.
For Jodi's car, the change in velocity is equal to 0. As a result, its acceleration is equal to 0 m/s².
For Julie's car,
Initial speed, u = 20 mph = 8.9408 m/s
Final speed, v = 30 mph = 13.4112 m/s
Acceleration,
[tex]a=\dfrac{13.4112-8.9408}{10}\\\\a=0.447\ m/s^2[/tex]
It is clear that Julie's car has the greater acceleration than the Jodi's car.
