Speed can never be negative because it does not depend in which direction the car moves whereas, velocity will change if a car turns from due North to East.
Quantities which can be described only by their magnitudes are called scalars and those which are described by both, magnitude and direction are vectors
        
             
        
        
        
Whatever phase of the moon Ike sees, he can expect to see 
the same phase of moon again, after 29.53 days later.
        
             
        
        
        
When a small cart collide with a large mass then during collision they must be in contact with each other for some interval of time
During this contact interval we can say they will exert normal force on each other
This normal force is always equal and opposite on two balls which means this force will follow Newton's III law
It will be same in magnitude but opposite in the direction
So here correct answer would be
<u><em>They both experience the same magnitude of the collision force.</em></u>
 
        
             
        
        
        
Answer:
They sh0uld g0 t0 the reactor and then, see what the issue is...
Explanation:
then, see if they can fix the problem, im sorry if its wr0ng.
 
        
             
        
        
        
Answer:
1)force:- force is an external affert by any body on an object.
2) force and motion are related to each other. force helps to create motion in any object.
3) frictional force
4) Newton