Answer:
19.3 m/s
Explanation:
Considering that no initial velocity was imparted to the hamburger, then we can use the distance covered formula for motion under constant acceleration (that of gravity) and solve for the time it took to reach the ground.
D = vi * t + (1/2) a * t^2
in our case
19 = 0 + 4.9 t^2
t^2 = 19/4.9
then t is approximately 1.97 seconds
We now use this time information in the equation for velocity under accelerated motion (due to gravity)
Vf = Vi + g * t
For our case:
Vf = 0 + 9.8 * 1.97 = 19.3 m/s
Answer:
10.23077 m
55.88391 N/m
Explanation:
m = Mass of person = 58.5 kg
T = Time period =
k = Spring constant
g = Acceleration due to gravity = 9.81 m/s²
Time period is given by
The spring stiffness constant is 55.88391 N/m
The force on spring is given by
The unstreched length of the cord is 20.5-10.26923 = 10.23077 m
Answer
given,
watermelon blown into three pieces
two pieces of mass m
both pieces speed = v = 31 m/s
mass of third piece = 3 m
using conservation of mass
velocity of third component
angle
An object of mass is moving with a uniform velocity of . The kinetic energy possessed by the object is .
Given:
Mass of an object
Velocity
Kinetic Energy Mass of Object
Kinetic Energy
Kinetic Energy
What is Kinetic Energy?
- In physics, an object's kinetic energy is the energy it has as a result of its motion.
- It is defined as the amount of work required to accelerate a body of a given mass from rest to a certain velocity.
- The body retains its kinetic energy after gaining it during acceleration until its speed changes.
- Kinetic energy is present in a speeding bullet, a walking human, and electromagnetic radiation such as light. The energy associated with the continual, random bouncing of atoms or molecules is another type of kinetic energy.
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the answer is d it reflects all the wavelengths of visible light.