Can someone help me with the exercise 3 only c,d,e please!!!
2 answers:
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Answer:
Parabola
Explanation:
The motion of a projectile consists of two independent motions:
- A uniform motion along the horizontal (x) direction, with constant velocity . In fact, there are no forces acting along this direction (if we neglect air resistance), so the acceleration is zero and the velocity is constant
- An uniformly accelerated motion along the vertical (y) direction, with constant acceleration downward (acceleration due to gravity). This acceleration is due to the force of gravity that pulls the projectile downward.
The composition of these two motions gives a parabolic trajectory. In fact, the equations of the motion along the two directions are:
(1)
(2)
Solving for t in eq.(1),
and substituting into (2)
which is the equation of a parabola.
Answer:
-1.44707 rad/s²
Explanation:
= Final angular velocity
= Initial angular velocity = 355 rpm
= Angular acceleration
= Angle of rotation = 76 rps
Converting rpm to rad/s
Converting rps to rad/s
Equation of rotational motion
The constant angular acceleration of the potter's wheel during this interval is -1.44707 rad/s²