Lightning McQueen races with an average speed of 125 miles per hour. He drives 400 miles in a race, how much time does it take him to complete the race?

Please help 20 points

3.2 hours

Explanation:

400÷125=3.2

3.2 or 3 hours and 12 minutes.

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft