First convert km/h to m/s because we need the answer to be J, which is Kg/m^2/s^2 105km/h=29.2 m/s (the rule is, to go from km/h to m/s is divide by 3.6) W=1/2mv^2 W=(0.5)(1250)(29.2)^2 W=531684J AND, because the work is being done to slow something down,...
6 years ago