A ball has a mass of 140 g What is the force needed to accelerate the ball at 25 the fraction with numerator m and denominator s squared ? (Formula: cap f is equal to ma )
Answer
A
115 cap n
B
3 point 5 cap n
C
165 cap n
D
4 point 5 cap n
Explanation
Use the formula F = ma, with mass in kilograms. Convert 140 g to 0.140 kg, then calculate F = 0.140 × 25 = 3.5 N. The force needed is 3.5 N, choice C.
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