Answer:
-.457 m/s^2 
Explanation:
Actual weight =   60 .3 (9.81) = 591.54 N
Accel of lift changes this to    60.3 ( 9.81 - L)     where L - accel of lift 
                                            60.3 ( 9.81 - L ) = 564 
                                                solve for L = .457 m/s^2  DOWNWARD
                                                         so L = - .457 m/s^2 
 
        
             
        
        
        
Answer: 13.2 seconds.
Explanation: using equation of motion; S= ut +1/2at² where u = initial velocity=0
S= distance travelled
a = acceleration due gravity
t= time.
1 foot = 0.305m so,
S= 2860 feet =872.3m
S= ut+1/2 at²
872.3 = 0×t + 1/2×10 × t²
872.3 =0 + 5t² 
T²= 872.3/5
T²= 174.46
Take the square root of T we then have;
t = 13.2 seconds to one decimal place.
 
        
                    
             
        
        
        
The force of the racket affects the ball's motion because it changes the momentum of the ball.
<h3>Impulse received by the ball</h3>
The impulse received by the ball through the racket affects the motion because it changes the momentum of the ball.
The ball which is initially at rest, will gain momentum after been hit with the racket.
J = ΔP = Ft
where;
- J is the impulse received by the ball
- ΔP is change in momentum of the ball
- F is the applied force
- t is the time of action
Thus, the force of the racket affects the ball's motion because it changes the momentum of the ball.
Learn more about impulse here: brainly.com/question/25700778
 
        
             
        
        
        
Surface currents are caused by winds. They move warm water away from the equator and cool water away from the poles. 
Hope it help
        
             
        
        
        
Well, one of the theories was that Charles darwin proved that theory evolution is real so that one theory.