Asked by Evangelin Lenin
Calculate the work required to be done to stop a car of 250 kg moving at a speed of 18km/hr?
answer is right or not please check
Mass =250 kg
Velocity = 18kg = 18 x 1000/60 x 60 = 5 m/s
KE = ½ mv x v = ½ x 250 x 5 = 125 x 5 = 625 J
Therefore the counter back this force we need the equal and opposite force.
Therefore Work needed = 625 J
answer is right or not please check
Mass =250 kg
Velocity = 18kg = 18 x 1000/60 x 60 = 5 m/s
KE = ½ mv x v = ½ x 250 x 5 = 125 x 5 = 625 J
Therefore the counter back this force we need the equal and opposite force.
Therefore Work needed = 625 J
Answers
Answered by
Damon
(1/2) m v^2 = (1/2)(250) * 25
because 5^2 = 25
= 3125 Joules
because 5^2 = 25
= 3125 Joules