Answer:
(-6,8)
Explanation:
Since v has direction as u, it must be a multiple n of u.
![\sqrt{(-3n)^+(4n)^2}=10\\9n^2+16N^2 =100\\n^2=4\\n=2](https://tex.z-dn.net/?f=%5Csqrt%7B%28-3n%29%5E%2B%284n%29%5E2%7D%3D10%5C%5C9n%5E2%2B16N%5E2%20%3D100%5C%5Cn%5E2%3D4%5C%5Cn%3D2)
therefore v = (3×2, 4×2) = (-6,8)
D.
The gravitational of a body is possessed by the body due to the virtue of its position.
The formula for gravitational potential energy is,
P.E = mgh joules
Substituting the values
196*9.8*250= 49k
Answer:
The answer you asked would be
Explanation:
Gravitational potential energy is the energy stored in an object due to its position above the Earth’s surface.
This is due to the force of gravity acting on an object. Gravitational potential energy is calculated as follows:
Ep = m × g × h so a Gravitational potential energy is the energy stored in an object due to its position above the Earth’s surface. so the answer would be A ball with a mass of 500g is lifted onto a shelf which is 1.5m above the ground. Calculate the gravitational potential energy gained by the ball (g = 9.8 N/kg).
Answer:
3 hours 71 minutes
Explanation:
As because Speed= distance/time taken
so time taken= 3.71