Work= (force)(distance)
178= m(9.81)x0.5
178=m(4.905)
178/4.905=m
His mass is 36.3 kg
John can run with the velocity of 5 m/s
Explanation:
- Kinetic energy is defined as the energy is being used to do an activity, basically energy associated with the motion of objects in the universe.
- The formula used to find the kinetic energy of an object is k = where as k represented as kinetic energy, m is the mass of the object and v is the velocity of the given object.
- Here, to find the answer we have to re-write the equation as
- Given, the mass of the object, here it is John = 80 kg, energy needs to be converted to kinetic energy, k = 1000 J.
- Hence, substitute all the values, then you would velocity as 5 m/s
It is b! the lithosphere is the crust and upper mantle
Answer:
It is a technique called water displacement method
Mass of an irregular object can be measured using a physical balance
Explanation:
- It consists of a calibrated glass cylinder containing water.
- The initial level of water column is noted
- The irregular object is submerged into it. The water level rises.
- The level of the water column is noted.
- The difference between the final and initial level of the water column gives the volume of the irregular object.
- The method used to find the volume of irregular shaped object is called the water displacement method.