Motion

Question 1

distance

Answer 1

• When an object moves , it goes from one point to another one .We call this distance .
• The S.I unit is meters (symbol : m )
• scalar quantity

Question 2

displacement

Answer 2

• something like distance but ALSO THE DIRECTION MATTERS
• S.I unit meters(symbol:m)
• the actual path covered.
• Vector quantity
• Ds= final position - initial position

Question 3

speed

Answer 3

• Speed is the distance that an object travels per time .
• S = d / t
• The S.I unit of speed is m/sec (meters per second ).
• Speed is scalar quantity .

Question 4

velocity

Answer 4

• velocity is the displacement of an object per time (taken)
  
  • V = Ds / t
• The S.I unit of speed is m/sec (meters per second ) .
• vector quantity l

Question 5

time

Answer 5

• time passed between two specific moments .
• Dt = t final - t initial
• The S.I unit is seconds (symbol : sec )
• scalar quantity