Severus has made a hexagonal cube of aluminum. When he places the dice on a table, it is subjected to the normal force 280 N. How long is the side of Severus' dice? I need help... i divided 280 N with 9,82m/^s which is the normal gravity in Sweden =28,6 kg

Two particles of masses m and 2m are placed on a smooth horizontal table. a string, which joins these two masses, hangs over the edge supporting a pulley, which suspends a particle of mass 3m.the pulley has negligible mass. the two parts of the string on the table are parallel and perpendicular to the edge of the table. the hanging parts of the string are vertical. find the acceleration of the particle of mass 3m.

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below.your friend goes first,and you follow after he has dropped a distance of 2.0m.when your friend hits the water,is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.

Can you match these to the correct definition