Question

Calculate the velocity of a bowling ball thar moves 30.4m along the floor of an alley in 5.4s at a constant rate.

Answer 1

• Displacement=30.4m
• Time=5.4s

$\\ \rm\longmapsto Velocity=\dfrac{Displacement}{Time}$

$\\ \rm\longmapsto Velocity=\dfrac{30.4}{5.4}$

$\\ \rm\longmapsto Velocity=5.62m/s$

Answer 2

Answer:

• from second newtons equation of motion:

${ \tt{s = ut + \frac{1}{2} {at}^{2} }}$

• s → 30.4 m

• t → 5.4 s

• a → 0 [ constant velocity ]

${ \tt{30.4 = (u \times 5.4) + 0}} \\ \\ { \tt{5.4u = 30.4}} \\ \\ { \boxed{ \tt{velocity = 5.63 \: m {s}^{ - 1} }}}$