a 3 kg drone is accelerating at 4.2 m/s². what force is acting on the drone?\na 0.71\nb 1.4\nc 12.6\nd…
a 3 kg drone is accelerating at 4.2 m/s². what force is acting on the drone?\na 0.71\nb 1.4\nc 12.6\nd 29.4\nquestion 4\n5 points\na small rocket motor produces a thrust of 6 n and upon ignition is measured to have a horizontal acceleration of 15 m/s². what is the mass of the rocket in kg?
Answer
Explanation:
Step1: Identify the formula
Use Newton's second - law $F = ma$, where $F$ is force, $m$ is mass, and $a$ is acceleration.
Step2: Substitute the values
Given $m = 3$ kg and $a=4.2$ m/s², then $F=3\times4.2$.
Step3: Calculate the force
$F = 12.6$ N.
Answer:
C. 12.6
Explanation for second question:
Step1: Rearrange the formula
From $F = ma$, we can solve for $m$ as $m=\frac{F}{a}$.
Step2: Substitute the values
Given $F = 6$ N and $a = 15$ m/s², then $m=\frac{6}{15}$.
Step3: Calculate the mass
$m = 0.4$ kg.
Answer for second question:
The mass of the rocket is 0.4 kg.