Help with physics please?

Science & Mathematics by Anonymous 2018-07-12 06:35:08

Social Science

1 answer

A car starts from rest, then accelerates at 1.20 m/s^2 for 7.00 s. It hits the breaks, slowing t a stop at a rate of -4.25 m/s^2. What is the total distance traveled?

Anonymous

top speed V = a1*t1 = 1.2*7 = 8.4 m/sec brakind time t2 = (0-V)/a2 = -8.4/-4.25 = 1.9765 sec total distance d = V/2*(t1+t2) = 4.2*(7+1.9765) = 37.701 m