Before hiring a personal trainer, be sure that he or she has a professional fitness certification approved by which organization?
a- ACSM
b- NSCA
c- NCCA
d- NASM
Answer: c- NCCA
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Earth is the smallest of the Terrestrial worlds, but it is big compared with the Jovian planets
Indicate whether the statement is true or false
A wiggle in both space and time is a
A) vibration. B) wave. C) both of these D) neither of these
You are traveling quickly along a freeway. Your car has kinetic energy. You suddenly skid to a stop because of congestion in traffic. Where is the kinetic energy that your car once had?
1.All of it goes into internal energy in the road. 2.All of it goes into internal energy in the tires. 3.Some of it goes into internal energy of the road and some into internal energy of the tires. 4.Some of it goes into internal energy of the road, some to internal energy of the tires, some to other internal energy, and some is transferred away by mechanical waves.
Lillian pulls on a 10-kg wagon with a constant force of 30 N. What is the wagon's acceleration?
A) 0.3 m/s2 B) 3.0 m/s2 C) 10 m/s2 D) 30 m/s2 E) 300 m/s2