Answer:
The centripetal acceleration of the object is  .
.  
Explanation:
We have,
Radius of a circular path is 200 m 
It takes 5 seconds to complete 10 revolutions. The angular velocity of the object is given by the rate of change of angular displacement per unit time :

The centripetal acceleration of the object is given by :

So, the centripetal acceleration of the object is  .
.
 
        
             
        
        
        
Force applied on the car due to engine is given as
 towards right
 towards right
Also there is a force on the car towards left due to air drag
 towards left
 towards left
now the net force on the car will be given as

now we can say that since the two forces are here opposite in direction so here the vector sum of two forces will be the algebraic difference of the two forces.
So we can say



So here net force on the car will be 150 N towards right and hence it will accelerate due to same force.
 
        
             
        
        
        
A red ladybug appears red in white light, red in red light, and black in blue light. Those would be the proper selections you'd need.
 
        
                    
             
        
        
        
Answer; 
It's about acceleration, right?
 
        
                    
             
        
        
        
Answer:
Buoyant force = 3.0 N
The object will not float.
Explanation:
Apparent weight of a body immersed in water is the actual weight of object minus buoyant force
Given in the question that;
Weight of object in air = 7.0 N
Apparent weight of object = 4.0 N
4.0 N = 7.0 N - Buoyant force
Buoyant force = 7.0 - 4.0 = 3.0 N
In this case, the buoyant force is less than weight of the object thus the object will sink.