a ball has a mass of 140 g. what is the force needed to accelerate the ball at 25 m/s²? (formula: f =…
a ball has a mass of 140 g. what is the force needed to accelerate the ball at 25 m/s²? (formula: f = ma)\n3.5 n\n115 n\n165 n\n4.5 n
Answer
Answer:
A. 3.5 N
Explanation:
Step1: Convert mass to SI unit
First, convert the mass from grams to kilograms. Since 1 kg = 1000 g, then $m = 140\ g=\frac{140}{1000}\ kg = 0.14\ kg$.
Step2: Apply Newton's second - law
Use the formula $F = ma$, where $m = 0.14\ kg$ and $a=25\ m/s^{2}$. So $F=(0.14\ kg)\times(25\ m/s^{2}) = 3.5\ N$.