Apackage was determined to have a mass of 5.7 kilograms. what's the force of gravity acting on the package on earth?
a. 37.93 n
b. 55.86 n
c. 1.72 n
d. 13.44 n
50 j of work was performed in 20 seconds. how much power was used to do this task?
a. 2.5 w
b. 4 w
c. 0.4 w
d. 24.5 w
a 63 kg object needs to be lifted 7 meters in a matter of 5 seconds. approximately how much horsepower is required to achieve this task?
a. 864.36 hp
b. 1.16 hp
c. 441 hp
d. 0.59 hp
a force of 350 n causes a body to move with an acceleration of 10 m/s2. what's the mass of the body?
a. 98 kg
b. 35 kg
c. 3,500 kg
d. 3,430 kg
which of the following statements is accurate?
a. if an object's velocity remains constant, its acceleration must be increasing.
b. if an object is said to be decelerating, its velocity must be increasing.
c. if an object's velocity decreases, then the object is accelerating.
d. if an object's velocity is changing, it's either experiencing acceleration or deceleration.
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