Answer:
Explanation:
Angular acceleration is defined as the variation of angular speed with respect to time:
The relation between the angular speed and the linear speed is given by:
Replacing (2) in (1):
We need to convert to :
Recall that:
Replacing:
Explanation:
*car A has the greatest PE
*gravitational potential energy
*mass and height
*car D has the least PE
Answer:
Venus's very slow rotations rate does not allow a magnetic field to form
<h2>
Height of tower is 11 meters</h2>
Explanation:
We have equation of motion v² = u² + 2as
Initial velocity, u = 3 m/s upwards
Acceleration, a = -9.81 m/s² downwards
Final velocity, v = -15 m/s downwards
Substituting
v² = u² + 2as
(-15)² = 3² + 2 x -9.81 x s
s = -11 m that is downward
Form the initial position it travels 11 meter downward.
Height of tower is 11 meters