Hello
We know that when the fisherman casts his line, it will travel in a parabolic path, typical to that of a projectile's motion.
Whenever an object is in projectile motion, its velocity has two components, the x-component and y-component. The x component is usually constant with acceleration 0; however, as we know that the acceleration due to gravity acts on any object moving vertically. This will be our acceleration for the vertical component. Now, we apply the equation of motion for the vertical component of velocity:
v^2 = u^2 +2as; where v is the y-component final velocity, u is y-component of the initial velocity, s is the distance traveled and a is the acceleration.
Whenever an object attains "maximum height", its vertical velocity instantaneously becomes 0; therefore, v = 0.
a = -9.81 m/s^2 (negative sign because velocity is upwards while acceleration downwards)
s = 2.9 m as stated
Plugging the values into the equation, u (vertical component of initial velocity) works out to be:
7.54 m/s in the vertical direction.
The vertical component of the velocity is:
velocity * sin(angle with horizontal)
Thus, velocity =
7.54/sin(25)
= 17.8 m/s
Answer:2.103 m/s
Explanation:
Given
mass of sports car
mass of SUV
Suppose u is the velocity if sports car before collision
Conserving momentum we get
After collision the combined mass drag 2.8 m and finally stops
From work energy theorem work done by friction is equal to change in kinetic energy of the combined mass system
where
Initial velocity
Potential, if the bow is released kinetic
The correct answer is
<span>the flux increases because the magnitude of b increases.
In fact, the magnetic flux is given by
</span>
<span>Where B is the intensity of the magnetic field, A the area enclosed by the coil and </span>
the angle between the direction of B and the perpendicular to the area A.
We can see that since in the problem the intensity of B increases, and the direction remains unchanged, then the magnetic flux increases as well.