A ball thrown horizontally from the top of a building hits the ground in 0.4 s. If it had been thrown with four-times the speed in the same direction, it would have hit the ground in 0.2 s O 0.1 s 0.8 s 1.6 s O 0.4 s

Determine two force members first. Two blocks are each pin connected to a massless horizontal link. Determine the largest P before motion cocurs. Use 0.35 and 0.3 for the friction coefficients. 45° J c 4.5 kg 3 kg B 30°

Determine two force members first. Two blocks are each pin connected to a massless horizontal link. Determine the largest P before motion cocurs. Use 0.35 and 0.3 for the friction coefficients. 45° J c 4.5 kg 3 kg B 30°

A block attached to a spring with a stiffness of 3.4 N/m. The relaxed length of the spring is 15 cm and its current length is 10 cm. What is the vector force that the spring exerts on the block? A. (-0.34, 0, 0) N                 B. (0.51, 0, 0) N                  C. (-0.51, 0, 0) N D. (0.17, 0, 0) N                  E. (-0.17, 0, 0) N