According to Newton's 3rd law of motion, every action has an equal and opposite reaction.
So Wall must apply a force of 50 Newton but in opposite direction.
Hope you got it :-D
The answer is: 720W
The definition of Power is:P =L/t =→F⋅→s/t =→F⋅→s/t = →F⋅→v
The ⋅ in the last formulation designate a scalar product, well-defined by:
→v . →w = |v| |w| cos(ˆvw), the angle ˆvw is 0 because →F and →v are parallel, so the cosinus is 1.
So: P=1800N⋅ 0,40m/s=720W.
Hi there!
The two main factors influencing gravitational pull are...
1) Distance
2) Mass
Answer:
The potential for r > rb is equal to zero.
Explanation:
For r > rb, the potential is:
Then, the net potential is:
Answer:
12J
Explanation:
Given parameters:
Mass = 1.5kg
Impulse = 6kgm/s
let us start first by find the velocity with which this body moves;
Impulse = mass x velocity
Velocity = Impulse / mass = 6/ 1.5 = 4m/s
Initial velocity = 0m/s
Unknown:
Resulting kinetic energy = ?
Solution:
To solve this problem use the formula below:
K.E = m (v - u)²
m is the mass
v is the final velocity
u is the initial velocity
So;
K.E = x 1.5 x (4 - 0)²
K.E = 1.5 x 8 = 12J