physics
posted by bola .
When brakes applied to a moving car travelling at 60km/hr it decelerates at a uniform rate of 5ms2. Calculate the time taken to reach a velocity of 36km/hr

physics 
drwls
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
K=F/e

physics 
Ibrahim hassann
Ibrahim hassan

physics 
Ibrahim hassann
Ibrahim jaagi

physics 
Ibrahim hassann jaagi
Ibrahim jaagi
Respond to this Question
Similar Questions

physics
A car that weighs 15,000 N is initially moving at 60km/hr when the brakes are applied. The car is brought to a stop in 30m. Assuming the force applied by the brakes is constant, determine the magnitude of the braking force. 
kinetics
a stationary car is hit from behind by another car travelling at 40km per hr. After collision both cars remain locked together. The masses of the stationary car and the moving car are 1500kg and 1300kg respectively (use g=9.8ms2) … 
kinetics
a stationary car is hit from behind by another car travelling at 40km per hr. After collision both cars remain locked together. The masses of the stationary car and the moving car are 1500kg and 1300kg respectively (use g=9.8ms2) … 
kinetics
a stationary car is hit from behind by another car travelling at 40km per hr. After collision both cars remain locked together. The masses of the stationary car and the moving car are 1500kg and 1300kg respectively (use g=9.8ms2) … 
kinetics
a stationary car is hit from behind by another car travelling at 40km per hr. After collision both cars remain locked together. The masses of the stationary car and the moving car are 1500kg and 1300kg respectively (use g=9.8ms2) … 
physics
A vehicle accelerates from rest with a unifrom acceleration of 0.5m/s^2 up to a velocity of 36km/h.It travels at constant velocity for 1km,the brakes are then applied and it comes to rest in 20s.Calculate the total distance travelled … 
physics
A car is traveling at a constant velocity of 21 m/s (about 45 mph). The driver sees a fallen tree lying across the road and hits the brakes after a delay (reaction time) of 245 ms. (1 ms = 103 s.) Calculate the distance the car travels … 
PHYSICS
A car is travelling at 60km/h when applies his brakes.If the car decelerates uniformly at 5.6m/s2,how far does the car go after the brakes are applied before coming to rest? 
physics
A car is travelling 20m/s along a straight road. The driver sees a 36km/h speed limit sign 100m ahead. What constant retardation is required to reduce the speed to 36km/h in this distance. Find also the time taken by the car to reach … 
physics
A car is moving at 20 m / s before it applies the brakes for 4 s. It slows at a constant rate to 10 m / s. Five seconds after this, the brakes are applied again and stop the car in 5 seconds. The car slows at a constant rate …