Answer:
4.5 m/s
Explanation:
The rock must barely clear the shelf below, this means that the horizontal distance covered must be
while the vertical distance covered must be
The rock is thrown horizontally with velocity , so we can rewrite the horizontal distance as
where t is the time of flight. Re-arranging the equation,
(1)
The vertical distance covered instead is
where we omit the term since the initial vertical velocity is zero. From this equation,
(2)
Equating (1) and (2), we can solve the equation to find :
Answer:
1 meter per second
Explanation:
Every second, he walks 1 meter because 15 ÷ 15 = 1
Answer:
Thus it moves 1.7 mm sideways
Solution:
As per the question:
Mass of the television, m = 25 kg
Height of the rubber pads, h = 1.0 cm = 0.01 m
Radius, R = 0.60 cm = 0.006 m
Horizontal force, F = 200 N
Shear Modulus of Rubber, G =
Now,
To calculate the distance moved:
G =
G =
where
= distance moved
Area of 4 rubber pads, A =
Now,
The x-component of the normal force is equal to <u>1706.45 N.</u>
Why?
To solve the problem, and since there is no additional information, we can safely assume that the x-axis is parallalel to the hill surface and the y-axis is perpendicular to the x-axis. Knowing that, we can calculate the components of the normal force (or weight for this case), using the following formulas:
Now, using the given information, we have:
Calculating, we have:
Hence, we have that the x-component of the normal force is equal to <u>1706.45 N.</u>
Have a nice day!