Velocity depends on the straight-line distance between your start-point and your end-point, regardless of what route you follow to get there.
If you stop at the same point where you started, then that distance is zero, no matter how far you drove before you returned to your start-point.
So the average velocity around any "CLOSED" path is <em>zero. (A)</em>
A.
Impulse is calculated through the equation,
I = mΔv
where I is impulse, m is mass and Δv is change is velocity. Substituting the known values,
I = (6 kg)(23 m/s - 6 m/s)
I = 102 kg m/s
<em>Answer: 102 kg m/s</em>
B.
Impulse in this item is calculated by multiplying the force by the time.
I = Force / time = (29 kg m/s²)(7 s) = 203 kg m/s
<em>Answer: 203 kg m/s</em>
C.
To answer this item, we have to multiply the mass and the velocity to get the impulse and divide the answer by the time to get the force.
F = m(v)/t
Substituting,
F = (0.1 kg)(-5.69 m/s)/0.64 s
F = -0.89 N
<em>Answer: -0.89 N</em>
Answer:
The strength of gravity on Pluto is 0.6 m/s²
Explanation:
The given mass of the shoe = 0.5 kg
The weight of the shoe (on Pluto), W = 0.3 N
Therefore, given that weight, W = Mass × The acceleration due to gravity, We have;
The strength of gravity = The force gravity applies to each unit of mass = The acceleration due to gravity (in m/s²)
The weight of the shoe, W = The mass of the shoe × The strength of gravity on Pluto
Substituting the known values, gives;
0.3 = 0.5 × The strength of gravity on Pluto
∴ The strength of gravity on Pluto = 0.6 m/s².
The solution of copper sulfate was too cold
Explanation:
