The following information pertains to questions 1-4.

An object of mass m_o is initially at rest on a horizontal, frictionless surface. The object is then subjected to a constant force of magnitude F_o which makes an angle _o with the horizontal as in the figure at the right. After the object has undergone a horizontal change in displacement D_o, it has speed v_o and kinetic energy KE_o.

If the angle which the force makes with the horizontal had been slightly less than _o, the speed of the object after the horizontal change in displacement D_o would have been ___ v_o.

If the mass of the object had been slightly more than m_o, the kinetic energy of the object after the horizontal change in displacement D_o would have been ___ KE_o.

If the horizontal change in displacement had been 2 D_o, the kinetic energy of the object after this horizontal change in displacement would have been KE = KE_o x ___.

If the same force continued to act on the object until the speed of the object was 2 v_o, the total distance through which the force would have acted would be D_o x ___.

The following information pertains to questions 5-6.

If the work required to get an object with mass m_o initially at rest to a speed v_o is W_o, . . .

. . . the work required to get another object with mass 2 m_o also initially at rest to a speed v_o would be W_o x ___.