What play did mr. and mrs. lincoln plan to see at ford's theater on the night mr. lincoln was assassinated?

An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3

Find the dimensions and area of the largest rectangle that can be inscribed in the upper half of the ellipse. (give your answers in terms of a and b. enter the dimensions as a comma-separated list.)

What is friction? how does it affect the motion of an object?