Answer:
kE=1/2mv^2
Explanation:
here
KE= 15000j
velocity =20m/s
mass=?
now
mass=
15000×2= (m)20^2
30000=m ×400
30000÷400=m
Mass (m)= 75
therefore mass is 75kilogram
Answer:
Explanation:
Stokes' theorem relates a surface integral of a the curl of the vector field to a line integral of the vector field around the boundary of the surface.
Answer:
0J
Explanation:
The kinetic energy would be zero. An object just released from rest will have no kinetic energy but the potential energy will be maximum.
Kinetic energy is the energy due to the motion of a body
Potential energy is the energy due to the position of a body.
- The kinetic energy at the start will therefore be zero
- All the energy is stored as potential energy.
Therefore, the kinetic energy is zero
Answer
Hi,
The forces are; weight (gravity), Normal/centripetal force and friction. Force due to gravity is constant where as friction and centripetal are not.
Explanation
Weight is constant, given by the force of gravity on the object. The centripetal force is a function of the angles occurring between the velocity vector and the weight vector that is at right angle with the perpendicular line drawn from the surface. Friction is a function of the centripetal force thus it also varies.
Hope this helps!
