Multiply. Express the product in lowest terms.
? 
A. 
B. 
C. 
D. 
Answer: B
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A variable force of magnitude F(x) moves a body of mass m along the x-axis from x1 to x2. The net work done by the force in moving the body from x1 to x2 is 
where v1 and v2 are the body's velocities at x1 and x2. Knowing that the work done by the force equals the change in the body's kinetic energy, solve the problem.How many foot-pounds of work does it take to throw a baseball 60 mph? A baseball weighs 5 oz, or 0.3125 lb.
A. 1210 ft-lb B. 18 ft-lb C. 38 ft-lb D. 563 ft-lb
Find the surface area of the solid.The right triangular prism shown has a height of 12 cm and its base is an equilateral triangle with sides of length 8 cm. Find its surface area. Give an exact answer. 
A. 288 + 32
cm2
B. 384 + 16
cm2
C. 384 + 32
cm2
D. 288 + 16
cm2
Find the sum.-25 + [8 + (-23)]
A. -40 B. 6 C. 56 D. 10
Use dimensional analysis to convert the quantity to the indicated units. If necessary, round the answer to two decimal places.10 ft to in.
A. 30 in. B. 120 in. C. 360 in. D. 40 in.