The mechanical energy consisting of potential and kinetic energy is:
0.001 x [ (acceleration of gravity x height) + (1/2) (speed)² ] .
6 ... A
9 ... A
10 ... ok
12 ... A
23 ... ok
24 ... A
B. A 250-N force moves an object 1 m.
C. A 25-N force moves an object 8 m.
D. A 600-N force is applied to an object and moves it 0 m.
The question is related to Physics and deals with kinematic equations. With the supplied information, one can calculate elements such as velocity or applied force in the jump.
The subject of the question pertains to the field of Physics, specifically the area of kinematic equations which deal with the motion of objects. The provided information in the question pertains to the rise of a person's body during a jump. Given the average height of 60cm that a person typically attains and the approximate rise of the body from the knees up being 50cm, these figures can be used in a Physics context to determine different factors of the jump such as velocity or force applied.
For example, using the equation of motion (height = 0.5 * gravity * time^2) where gravity is around 9.8 m/s^2, you can calculate the time taken to reach maximum height. We can calculate this using the initial velocity combined with the gravity force. Furthermore, the force applied can be calculated knowing the mass of the person and the acceleration (which is the initial velocity divided by the time).
#SPJ3
Answer:
Scalar
Explanation:
A physical quantity that is completely described by its magnitude; examples of scalars are volume, density, speed, energy, mass, and time. Other quantities, such as force and velocity, have both magnitude and direction and are called vectors.