A force of 120 N is applied to an object whose mass is 30 kg. The object's acceleration is
A) 3600 m/s2.
B) 150 m/s2.
C) 4.0 m/s2
D) 2.0 m/s2.
E) 0.25 m/s2.
C
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The figure shows the speedometer readings as a car comes to a stop. Solve graphically for the acceleration at t = 7.0 s.
A. 2.5 
B. - 2.5
C. - 2.0
D. 2.0
Which of the following is a consequence of Hubble's Law?
A) The more distant a galaxy is from us, the faster it moves away from us. B) The closer a galaxy is to us, the faster it moves away from us. C) All galaxies are moving away from us equally fast. D) More distant galaxies appear younger. E) The Big Bang
What are the three modes of heat transfer?
What will be an ideal response?
Series/Parallel Circuits: What is the magnitude of the potential difference between points C and D for the circuit shown in the figure? The battery is ideal, and all the numbers are accurate to two significant figures.
A. 6.0 V B. 4.0 V C. 3.0 V D. 2.0 V