Answer:
Mass of ball = 3.0102 Kg.
Explanation:
Potential energy at height h is given by
PE = mgh
where m is the mass of the body
g is the the acceleration due to gravity whose value is 9.8 m/s^2
h is the height from surface level
PE is potential energy
In the problem given h = 2 meters
PE = 59 joules
59 = m*9.8*2
=> m = 59/9.8*2 = 3.0102 Kg
Thus, mass of ball is 3.0102 Kg.
Answer:
T = 2.5 s
Explanation:
T = 2π√(1.5/9.8) = 2.45817...
The answer is A. Pain Relievers
According to Newton's Second Law of Motion, the force is directly proportional to mass and acceleration. However, mass and acceleration are inversely proportional to each other. It is best interpreted by the equation: F = ma. So, for the same amount of force, it would produce less acceleration on the greater mass of the helicopter.
Because acceleration was constant throughout the slide, we can show the slide lasted
Also because accleration was constant, we know the average velocity of the book was
Average velocity is also given by
so the width of the desk must have been
which means C is the most likely answer.