Distinguish between terms speed and velocity.
Distinguish between terms speed and velocity.
Speed is the rate of change of distance. It is a scalar quantity and is always positive.
Velocity is the rate of change of displacement. It is a vector quantity and can be positive, negative or zero.
Similar Questions
A girl running a race accelerates at $2.5\, m s ^{-2}$ for the first $4\, s$ of the race. How far does she travel in this time ?
A girl running a race accelerates at $2.5\, m s ^{-2}$ for the first $4\, s$ of the race. How far does she travel in this time ?
A cyclist driving at $36\, km h^{-1}$ stops his cycle in $2\, s$ by the application of brakes. Calculate $(i)$ retardation $(ii)$ distance covered during the application of brakes.
A cyclist driving at $36\, km h^{-1}$ stops his cycle in $2\, s$ by the application of brakes. Calculate $(i)$ retardation $(ii)$ distance covered during the application of brakes.
A particle accelerates from rest at a constant rate for sometime and attains a constant velocity of $8\, m s ^{-1}$. Afterwards it decelerates with a constant rate and comes to rest. If the total time taken is $4$ second, the distance travelled is
A particle accelerates from rest at a constant rate for sometime and attains a constant velocity of $8\, m s ^{-1}$. Afterwards it decelerates with a constant rate and comes to rest. If the total time taken is $4$ second, the distance travelled is
Write true or false for the following statements
A motion is said to be uniform, if a body undergoes equal displacements in equal intervals of time.
Write true or false for the following statements
A motion is said to be uniform, if a body undergoes equal displacements in equal intervals of time.
Derive the equation $v^{2}-u^{2}=2 a S$ graphically.
Derive the equation $v^{2}-u^{2}=2 a S$ graphically.