Question -
Answer -
Retarding force,┬аF┬а= тАУ50 N
Mass of the body,┬аm┬а= 20 kg
Initial velocity of the body,┬аu┬а=15 m/s
Final velocity of the body,┬аv┬а=0
Using NewtonтАЩs second law of motion, theacceleration (a) produced in the body can be calculated as:
F┬а=┬аma
тАУ50 = 20 ├Ч┬аa
Using the first equation of motion, the time(t) taken by the body to come to rest can be calculated as:
v┬а=┬аu┬а+┬аat
┬а=6 s