Plenty of slack handed estimates on my part. But this isn't an empty aircraft we're talking about.
Obviously these things are all dependent on a number of factors but the following extract from the 777 testing programme shows that:
"A 777-200 at the Maximum Takeoff Weight of 288 tonnes (288,000 kg, or 545,000 lb) was accelerated to a V1 speed of 210 mph/183 Kt, at which point maximum brakes were applied. Despite using badly-worn brakes, the aircraft stopped in 4000 ft."
4,000ft in new money is 1,212 metres. The maximum landing weight for the 777-200 is 213,000kg, a lot less than in the test above, and the test above was using wheel brakes only - not reverse thrust also.
MH370's likely approach speed and landing weight would probably have been even less than the figures shown above.
Typical approach speed for the 777-200 is 160mph/139 Kt.
Empty weight of the 777-200 is around 138,000kg so say allowing for 6,000kg fuel remaining, 20,000kg of passengers and another 15,000kg cargo that would make 179,000kg (as a pure estimate of course).