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ki77a [65]
3 years ago
7

Which of the following are true for E = mc2?

Physics
1 answer:
lozanna [386]3 years ago
6 0

The question is very poor.

The answer it's fishing for is choice (b), but the only way to know that is
to observe that the others are even worse, and totally from outer space.

This is a Physics question, for heaven's sake.  Real science is built on
measurements, and nothing gets done by operating with quantities like
a "small" change in mass, or a "great deal" of energy.  This question
causes me to shiver with indignation.

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Answer:

65.2 %

Explanation:

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e= (1 - (Q2/Q1)) x 100

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A race cars velocity increases from 6.0 m/s to 36 m/s over a 5.0 s time interval. What is It’s average acceleration?
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The acceleration of the race car is 6 m/s²

The given parameters;

initial velocity of the race car, u = 6 m/s

final velocity of the race car, v = 36 m/s

time of motion, t = 5 s

Acceleration is defined as the change in velocity per change in time of motion.

The acceleration of the race car is calculated as follows;

a=\frac{v-u}{t} \\\\a = \frac{36-6}{5} \\\\a = 6 \ m/s^2

Thus, the acceleration of the race car is 6 m/s²

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