Question

forces unit 1 test review an object is accelerating at a rate of 1.3 m/s² with a net force of 490 n. what is the mass of the object? 0.0027 kg 376.93 kg 637 kg 980 kg

Explanation:

Step1: Recall Newton's second law

Newton's second law is \( F = ma \), where \( F \) is force, \( m \) is mass, and \( a \) is acceleration. We need to solve for \( m \), so rearrange the formula to \( m=\frac{F}{a} \).

Step2: Substitute the given values

We know \( F = 490\ N \) and \( a = 1.3\ m/s^2 \). Substitute these into the formula: \( m=\frac{490}{1.3} \).

Step3: Calculate the mass

\( \frac{490}{1.3}\approx376.923 \), which rounds to \( 376.93\ kg \).

Answer:

376.93 kg (corresponding to the option with 376.93 kg)