PDF chapter test TRY NOW

1. Distinguish between speed and velocity.
  
a. Speed is .
  
b. Velocity is .
  
2. What do you mean by constant acceleration?
  
a. If a body travels in a straight line and its velocity rises or drops by the same magnitude in equal periods of time is said to have .
 
b. Acceleration is a .
 
3. What is centre of gravity?
  
a. The point through which an object's  appears to act is called the centre of gravity.
  
b is point at which the combined mass of the body appears to be concentrated.