Question

cca 2 retest
examine the table provided. which of the objects is producing the smallest force?

object	mass	acceleration
tennis ball	0.055 kg	100 m/s²
marble	0.015 kg	1000 m/s²
ping pong ball	0.02 kg	10 m/s²

a soccer ball
b ping pong ball
c tennis ball
d marble

Explanation:

Step1: Recall force formula

Force is calculated by $F = ma$ (Newton's second - law), where $m$ is mass and $a$ is acceleration.

Step2: Calculate force for soccer ball

$F_{soccer}=m_{soccer}\times a_{soccer}=0.45\times5 = 2.25$ N

Step3: Calculate force for tennis ball

$F_{tennis}=m_{tennis}\times a_{tennis}=0.055\times100 = 5.5$ N

Step4: Calculate force for marble

$F_{marble}=m_{marble}\times a_{marble}=0.015\times1000 = 15$ N

Step5: Calculate force for ping - pong ball

$F_{ping - pong}=m_{ping - pong}\times a_{ping - pong}=0.02\times10 = 0.2$ N

Step6: Compare forces

Comparing $F_{soccer}=2.25$ N, $F_{tennis}=5.5$ N, $F_{marble}=15$ N, $F_{ping - pong}=0.2$ N, we can see that the ping - pong ball has the smallest force.

Answer:

B. ping pong ball