The wall will push back, in exactly the opposite direction, and with
exactly the same size force.
That's why the net force on the palm of your hand is zero, and that
in turn is the reason that your hand doesn't accelerate.
If you keep increasing the strength of your push, then eventually you
exceed the force that the wall is capable of delivering. Then the wall
crumbles and falls, your hand accelerates in the direction you're pushing,
and the crowd goes wild !
Answer:
Newton Second
Explanation:
The SI unit of impulse in Newton Second (N.s)
1, 2 and 4 apply. im not sure that 2 ALWAYS applies though.
Answer:
The net force acting on the otter along the incline is 13.96 N.
Explanation:
It is given that,
Mass of the otter, m = 2 kg
Distance covered by otter, d = 85 cm = 0.85 m
It takes 0.5 seconds.
We need to find the net force acts on the otter along the incline. If a is the acceleration of the otter. It can be calculated using second equation of motion as :

Here, u = 0 (at rest)




The net force acting on the otter along the incline is given by :
F = ma

F = 13.6 N
So, the net force acting on the otter along the incline is 13.96 N. Hence, this is the required solution.