Physics 100A - General Physics I » Fall 2021 » Exam 1

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Question #1
The radius of a spherical air baloon is 12.5 m.     Find the volume of the sphere in units of  ft3.  Express your answer in scientific notation to 2 significant figures.  
A.   2.9x10^5
B.   1.0x10^6
C.   3.2x10^4
D.   4.2x10^3
E.   none of the above
Question #2
A nerve signal travels at a constant velocity of 450 ft/minute.  How far will this signal travel in meters in 0.1 seconds.  Express your answer in scientific notation to 2 significant figures.
A.   4.3x10^2
B.   6.1x10^2
C.   2.3x10^-1
D.   3.3x10^-1
E.   none of the above
Question #3
A cheetah accelerates from rest to 32m/s in 5s.   Find the total distance that the cheetah has travelled.
A.   42.0m
B.   32.1m
C.   71m
D.   80m
E.   none of the above
Question #4
A basketball player makes a bounce pass to another player. The ball is thrown with an initial speed of 5m/s in the horizontal direction. It is released 1.0 m from the floor. How long does the ball take to strike the floor?
A.   0.23s
B.   0.33s
C.   0.45s
D.   0.52s
E.   none of the above
Question #5
A basketball player makes a bounce pass to another player. The ball is thrown with an initial speed of 5m/s in the horizontal direction. It is released 1.0 m from the floor. How far does the ball travel in the horizontal direction?
A.   1.6m
B.   2.3m
C.   3.4m
D.   4.8m
E.   none of the above

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