Answer:
10.28571 N
Explanation:
m = Mass of toboggan = 15 kg
u = Initial velocity = 4.8 m/s
v = Final velocity = 0
t = Time taken = 7 seconds
Friction force is given by the change in momentum over time
The magnitude of the average friction force acting on the toboggan while it was moving is 10.28571 N
Answer:
9.4 m
Explanation:
This is a projectile motion. The maximum height above the level projection is given by
is the initial velocity, is the angle of projection above the horizontal and is the acceleration of gravity.
The maximujm height above the ground is 1 m + 8.4 m = 9.4 m
Answer:
unless acted upon by an unbalanced force.
Explanation:
If a ball is rolling, it will continue to roll forever, unless it is acted upon by an unbalanced force. For example, the friction of the floor it's rolling on slows it down. The density of the air hitting it also slows it down.
Answer:
The speed is
Explanation:
From the question we are told that
The magnetic field is
The electric field is
Generally the speed of the electron is mathematically represented as
Substituting values
From what I have been told, the four basic forces regarding physics are the strong or powerful force, a gravitational force, an electromagnetic force, and a weak force. The strong force binds nuclei. Weak forces take care of nuclear decay. Electromagnetic forces exists when two or more objects have an electric charge like a magnet or positive and negative, negative and positive And gravitational forces is just gravity. What holds us down.