Answer: Option A, Kettlebell exercise
Explanation: Kettlebell exercise is a form of exercise that help build strength as well as improve range of motion. There are several approaches to kettlebell exercise and it is recommended mostly for athletes.
Answer:
0.0902282795798 m
Explanation:
m = Mass of Neptunium = 60 kg
= Density of Neptunium =
r = Radius
Volume is given by
The radius of the sphere would be 0.0902282795798 m
First, we must recall that distance is the total length traveled by an object in which the direction of the motion does not matter. Meanwhile, displacement is the distance of the object from its starting point which means the directions matters for displacement.
Now, speed is distance over time while velocity is displacement over time. Since we're talking about the same object's motion, the total time traveled is (120 + 90) = 210 seconds.
Now, the total distance traveled by the object is (400 + 250) = 650 m. Meanwhile the total displacement traveled by the object is 400 m, East + 250 m, West = 150 m, East.
Now, to find the speed and velocity, we just divide the values of distance and displacement, respectively, over time. Thus, we have
speed = 650 m / 210s ≈ 3.095 m/s
velocity = 150 m, East /210 s ≈ 0.714 m/s, East
Now, rounding the values up to 2 significant digits, we have
a) speed = 3.1 m/s
b) velocity = 0.71 m/s, East
Typically a scaffolding has two ropes to support it. One
on the left most side while the other one is on the right most side. Based on
equilibrium rule, the summation of forces must be 0. The downward force is the
weight of person and scaffolding, while the upward force are the tensions on
the two ropes, hence:
Weight person + Weight scaffolding = 2 * Tension
500 N + Weight scaffolding = 2 * 400 N
Weight scaffolding = 300 N