Answer:
Mechanical Energy 
Explanation:
The sum of kinetic energy and potential energy of an object is its total mechanical energy.
 
        
             
        
        
        
Answer:
v = 5.15 m/s
Explanation:
At constant velocity, the cable tension will equal the car weight of 984(9.81) = 9,653 N
As the cable tension is less than this value, the car must be accelerating downward.
7730 = 984(9.81 - a)
a = 1.95 m/s²
kinematic equations s = ut + ½at² and v = u + at
-5.00 = u(4.00) + ½(-1.95)4.00²
u = 2.65 m/s    the car's initial velocity was upward at 2.65 m/s
v = 2.65 + (-1.95)(4.00)
v = -5.15 m/s
 
        
             
        
        
        
The horizontal component of the velocity of the ball is calculated by multiplying the speed by the cosine of the given angle. 
                        x-component of speed = (31 m/s)(cos 35°) 
                                                               = 25.39 m/s
Thus, the horizontal velocity component of the ball is 25.39 m/s. 
        
                    
             
        
        
        
Answer:
0.0443 m/s
Explanation:
 = Mass of honeybee = 0.15 g
 = Mass of honeybee = 0.15 g
 = Mass of popsicle stick = 4.75 g
 = Mass of popsicle stick = 4.75 g
 = Velocity of honeybee
 = Velocity of honeybee
 = Velocity of stick = 0.14 cm/s
 = Velocity of stick = 0.14 cm/s
In this system the linear momentum is conserved

The velocity of the bee is 4.43 cm/s or 0.0443 m/s