Question

Auto companies frequently test the safety of automobiles by putting themthrough crash tests to observe the integrity of the passenger compartment.If a 1000-kg car is sent toward a cement wall with a speed of 14 m/s and theimpact brings it to a stop in 8.00 x 10-2 s, with what average force is it,brought to rest?

Answer 1

Answer:

The average force that brings the car to rest is 175000N

Step-by-step explanation:

The mass of the car, m = 1000 kg

Initial speed, u = 14 m/s

Final speed, v = 0 m/s (Since the car comes to a stop)

The time taken, t = 8 x 10^-2 s

The average force is calculated as:

`\begin{gathered} F=(m(u-v))/(t) \\ F=(1000(14-0))/(8*10^(-2)) \\ F=(14000)/(0.08) \\ F=175000N \end{gathered}`

The average force that brings the car to rest is 175000N