A waiter carries a 253g drink a distance of 12m on a horizontal tray at constant speed of 1.1 m/s.
A) what work is done by the normal force of the tray on the drink?
B) what work is done by the friction force of the tray on the drink?
A) what work is done by the normal force of the tray on the drink?
B) what work is done by the friction force of the tray on the drink?