Adrag racing car with a weight of 1600 lbf attains a speed of 270 mph in a quarter-mile race. immediately after passing the timing lights, the driver opens a drag chute. at this point, the air and rolling resistance of the car are negligible compared to the drag of the chute. what chute diameter (in feet) is required to make sure that the car decelerates to 60 mph within 7 seconds?

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 710 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 23° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.19. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. a) what is the block's initial mechanical energy? b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

Write the function getkthdigit(n, k) that takes a possibly-negative int n and a non-negative int k, and returns the kth digit of n, starting from 0, counting from the right

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.