You and 3 friends apply a combined force of 489.5n to push a piano. the amount of work done is 1762.2j. what distance did the piano move

Amass has an acceleration of 10- 2t. what is its velocity and displacement if it started at x- 4m and the initial velocity was 8m/s? at what time does it have 0 velocity? graph all graphs.

Abookcase has a mass of 38 kg and the coefficient of friction between it and the floor is 0.82 what is the maximum force of friction between the bookcase and the floor a 372n b 305n c 412n d 449n

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.