Change in v = 9.8 m/s 2 x t. The diagram shows a ball falling toward Earth in a vacuum.
v= 0 m/s
Time (s) o
1
2
3
4.
What is the velocity of the ball at 3 seconds?
A. 9.8 m/s
B. 19.6 m/s
C. 39.2 m/s
D. 29.4 m/s

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.

Sunidhi made a study chart about changes in states of matter. which headings best complete the chart?

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)