The formula relates the speed (in mph) of a car and the distance of the skid when a driver hits the brakes. On wet pavement, . How far will a car skid if it is going 50 mph?
A) about 215 ft
B) about 204 ft
C) about 238 ft
D) about 283 ft
E) about 226 ft

Question

The formula  relates the speed  (in mph) of a car and the distance  of the skid when a driver hits the brakes. On wet pavement,  . How far will a car skid if it is going 50 mph?
A) about 215 ft 
B) about 204 ft 
C) about 238 ft 
D) about 283 ft 
E) about 226 ft

Quizplus · Accepted Answer

We need to use the formula 11ec1e8e_2c0b_e92f_be9b_e34b70c6a8cb_TBX8967_11, which relates the speed of the car and the distance of the skid.

11ec1e8e_2c0b_e92f_be9b_e34b70c6a8cb_TBX8967_11

= 11ec1e8e_2c0b_e931_be9b_099c269a6e30_TBX8967_11 / (30*11ec1e8e_2c0b_e930_be9b_253bf355e461_TBX8967_11)

Substituting the given values, we get

11ec1e8e_2c0b_e92f_be9b_e34b70c6a8cb_TBX8967_11

= 11ec1e8e_2c0b_e931_be9b_099c269a6e30_TBX8967_11 / (30*0.9)

= 11ec1e8e_2c0b_e931_be9b_099c269a6e30_TBX8967_11 / 27

Now, to find the skid distance at 50 mph, we can use the formula as follows:

Skid distance = 11ec1e8e_2c0b_e92f_be9b_e34b70c6a8cb_TBX8967_11 * 50^2

Substituting the value of 11ec1e8e_2c0b_e92f_be9b_e34b70c6a8cb_TBX8967_11, we get

Skid distance = (11ec1e8e_2c0b_e931_be9b_099c269a6e30_TBX8967_11 / 27) * 2500

= 11ec1e8e_2c0b_e931_be9b_099c269a6e30_TBX8967_11 * (2500/27)

= 11ec1e8e_2c0b_e931_be9b_099c269a6e30_TBX8967_11 * 92.59

Rounding off to the nearest foot, we get the skid distance as about 238 ft. Thus, the correct choice is C.

The Formula Relates the Speed (In Mph) of a Car