Question

To stop a 2500 kg car traveling at 17 m/s in a time of 9 s requires an average force of magnitude? Select one: O A. 2400 N O B. 2.73 KN O C. 24.53 KN O D. 4.72 KN

Answer 1

The answer is in the image.

) Man of the can m= 2500kg It's enotial velocity u= 17 mis Id is to be stopped He seei When et es stopped, ed sheets final velocity Let a be the requered arve acceleraton.. Now from the equation of kromater, es es va v- u t-a) t. un at V20 burat [Eva 17 g 02 a- + a 2 1.89 mis² from Nes Newtons and law, force acceleration reured, F- man X IKN =1000N ха - 2500 X 489 F = 4720 N F 2 4.72 KN | Coption by