Question

reitz integrated chemistry physics
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question 17
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20 kg 40 n →
100 n →
what is the net force?
what is the acceleration?
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Explanation:

Step1: Calculate Net Force

Since both forces act in the same direction (right), we sum them.
Net Force \( F_{net} = 40\,\text{N} + 100\,\text{N} = 140\,\text{N} \) (right direction, but magnitude is 140 N).

Step2: Calculate Acceleration

Use Newton's second law \( F = ma \), so \( a = \frac{F_{net}}{m} \).
Mass \( m = 20\,\text{kg} \), \( F_{net} = 140\,\text{N} \).
\( a = \frac{140\,\text{N}}{20\,\text{kg}} = 7\,\text{m/s}^2 \) (right direction, magnitude 7 m/s²).

Answer:

Net Force: \( 140\,\text{N} \) (right)
Acceleration: \( 7\,\text{m/s}^2 \) (right)