Aman claims that he can hold onto a 13.0-kg child in a head-on collision as long as he has his seat belt on. consider this man in a collision in which he is in one of two identical cars each traveling toward the other at 59.0 mi/h relative to the ground. the car in which he rides is brought to rest in 0.11 s.

F = 3116.49 N

Explanation:

given,                          

mass of the child = 15 kg

speed = 59 mi/hr                    

time taken to come to rest = 0.11 s

force on the boy = ?                    

1 mi/hr = 0.447 m/s                    

59 mi/hr = 59 × 0.447 = 26.37 m/s

a=239.73 m/s²

the calculation of force

Force = mass × acceleration

F = m × a

F = 13 × 239.73

F = 3116.49 N

diagram is missing, but i will try to explain your doubt.

answer:

amplitude is the maximum displacement or distance moved on a point of a vibrating body or wave measured from its equilibrium position.it is equal to half the length of vibration path.

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form