Help on Santa
If each one of Santa's reindeer weighed 75kg, Santa's sleigh weighed nothing (it is magic) and Santa weighed 98kg (he has eaten a lot of mince pies), what stopping distance does Santa, sleigh and reindeer need on a roof, if his average speed is 50mph and the sleigh can go from 0 to 60mph in 5 seconds? Assume a coefficient of friction of 0.8.
a) 5m b) 15m c) 32m d) 57m
a) 5m b) 15m c) 32m d) 57m