3. A scooter with a mass of 24 kg accelerates at 14 m/s/s when ______ N of force is applied.
1 answer:
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Answer:
a = 6.4 [m/s²]
Explanation:
To solve this problem we must use Newton's second law, which tells us that the sum of forces on a body is equal to the product of mass by acceleration. In this way, we have the following equation.
∑F = m*a
where:
∑F = sum of forces (horizontal force = 40 [N] and friction force = 8 [N])
m = mass of the block = 5 [kg]
a = acceleration [m/s²]
Now replacing:
Note: the sign of the friction force is negative since this force is acting against the movement of the block.