There's just one other part:
The car is then filled with passengers so that its mass is doubled. Calculate its stopping distance when traveling at 70MPH. Assume the force calculated in b(ii) remains constant.
I calculated the force as:
F=ma
F=450*6.53= 2938.5N
How do I go about doing this is...
Ok, this is what I did.
S=75
U=31.3
V=0
A=?
T=?
s=u²+2as
0=31.3²+2*a*75
0=979.69+150a
-979.69/150=a
a=-6.53 ms-2
Which looking back doesn't look too bad, when I did it first time I think I accidentally must have typed the wrong numbers into my calculator because I got -1000ms-2...
Homework Statement
The braking distance is the distance the car travels while decelerating once the brakes have been applied. A car of mass 450kg is traveling at a speed of 70MPH (31.3ms-1) when the driver makes an emergency stop.
Calculate the deceleration of the car (Assume a uniform...