A 78 N block is supported by a spring whose constant is 12 N/m. Calculate the elongation of the spring under this load. a. 6.5 m
b. 1.5 m
c. 8.2 m
d. 7.2 m

Asher cycles 12 miles in 16 hours. what is his speed?

Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?