Question

Determine the speed of the car I1 sec, 12 see. 8 sec, and 73 sec after the car begins motion

Answer 1

Explanation:

For 11 seconds after the car starts, (look at the interval) we do (5/12)*11^2 which is rounded to 50.4 mph

For 12 seconds after the car starts, (look at the interval) we do (5/12)*12^2 which is 60 mph

For 48 seconds after the car starts, we look at that interval we just have 60mph.

73 seconds after the car starts, we do (3/20)(92-73)^2 which is rounded to 54.2 mph