The minimum velocity of the Salmon jumping at the given angle is 12.3 m/s.
The given parameters;
- height of the waterfall, h = 0.432 m
- distance of the Salmon from the waterfall, s = 3.17 m
- angle of projection of the Salmon, = 30.8º
The time of motion to fall from 0.432 m is calculated as;
The minimum velocity of the Salmon jumping at the given angle is calculated as;
Thus, the minimum velocity of the Salmon jumping at the given angle is 12.3 m/s.
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The velocity and acceleration of the skydiver will increase as she falls to the ground. According to Newton’s Law of gravity.
0.001184 g/mL = 0.001184 x 1000 ml/L x 1/1000 kg/g
= 0.001184 kg/L
Volume of room:
2.84 x 2.27 x 2.71
= 17.47 m³ = 17470 L
Mass of air = density x volume
= 0.001184 x 17470
= 20.7 kg
Answer:
D Any of the above depending on the directions of forces.
Explanation:
The net force on the box depends on the direction of the forces.
For example, we have three special cases:
- If the two forces are in the same direction, they add to each other, so the net force is
F = 10 N + 10 N = 20 N
- If the two forces are in opposite directions, the net force is given by the difference between the two forces, so
F = 10 N - 10 N = 0 N
- If the two forces are perpendicular to each other, their resultant is given by the Pythagorean theorem:
If the two forces are at any other angle, their resultant can be found by resolving each force along the x- and y- direction, and adding the components along each direction. The resultant net force will have a magnitude between 0 N and 20 N.
Answer:
Using the grid, graph, and given data, estimate the distance traveled by the walker during the two hour interval from t= 0 t = 0 to t= 2. t = 2. You should use time intervals of width Δt= 0.5.
Explanation:
Using the grid, graph, and given data, estimate the distance traveled by the walker during the two hour interval from t= 0 t = 0 to t= 2. t = 2. You should use time intervals of width Δt= 0.5.