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3 years ago

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What is the minimum force required to increase the energy of a car by 69 J over a distance of 42 m? Assume the force is constant

.
Group of answer choices

0.61 N

69 N

2900 N

1.6 N

110 N

1 answer:

sineoko [7]3 years ago

3 0

ANSWER: 1.6N (forth option)

EXPLANATION:
E= Force x displacement
69=F(42)
69/42 = F
F=1.64 N

Answer : 1.6N

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Answer:

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Explanation:

We are given that

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Using 1m=100 cm

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Using the formula

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$16\times 10^{14}-4\times 10^{14}=0.038a$

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As we know that there is no external force in the direction of motion of truck and car

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b) For acceleration of truck we will find the rate of change in velocity of the truck

so we have

$a_{truck} = \frac{v_f - v_i}{t}$

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The free body diagram of the question is shown on the first uploaded image From the question we are told that

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