Homework Help: physics

Posted by bola on Tuesday, February 23, 2010 at 3:08am.

When brakes applied to a moving car travelling at 60km/hr it decelerates at a uniform rate of 5ms-2. Calculate the time taken to reach a velocity of 36km/hr

physics - drwls, Tuesday, February 23, 2010 at 3:58am
Convert the two km/h speeds to m/s.
60 km/h = 16.67 m/s
36 km/h = 10.00 m/s

Deceleration time requred
= (16.67 - 10)/a = ___ seconds
is a is in units of m/s^2
physics - ABDULRAHMAN, Thursday, March 7, 2013 at 12:49pm
K=F/e

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