A car traveling east at 42.4 m/s passes a trooper hiding at the roadside. The driver uniformly reduces his speed to 25.0 m/s in 4.00 s.
(a) What is the magnitude and direction of the car's acceleration as it slows down?
physics - charrice, Wednesday, August 29, 2012 at 11:46pm
initial velocity = 42.4 m/s
final velocity = 25.0 m/s
time = 4.00s
(final velocity - initial velocity)/time
(25.0m/s - 42.4m/s)/ 4.00 s
'sign' of answer determines direction of acceleration
physics - Anonymous, Friday, June 6, 2014 at 6:55pm