Question

See attached photo. TY​

Answer 1

Answer:

Step-by-step explanation:

1. u = 0

v = 20 m / s

t = 10 s

therefore a = v-u/t

= 20-0/10

= 20/10

= 2 m/s^2

therefore acceleration of car is 2m/s^2

2. u = 4 m/s

v= 10m/s

t = 3 s

therefore a = v-u/t

= 10-4/3

= 6/3

= 2m/s^2

therefore athlete acceleration is 2m/s^2

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