How would the apparent brightness of an object

Reference no: EM1318857

Q1. A motorist travelling at 15.0 m/s encounters a deer in the road 50 m ahead.

If the maximum acceleration the vehicle's brakes are capable of is -5 m/s2, what is the maximum reaction time of the motorist that would allow her or him to avoid hitting the deer?

Q2. According to the inverse square law of light, how would the apparent brightness of an object change if its distance to us triples?

Reference no: EM1318857

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