Question Detail

PHY 101 PHY 101 Past Questions Objective Question

Question

A 2.8 g bullet slows from 540 m/s to 120 m/s after passing through a wall. Energy transferred is:
Options
A 776 J
B 77.6 J
C 388 J
Correct Answer
D 38.8 J
Correct Answer

Option C is the correct answer.

Detailed Explanation

Energy lost = change in kinetic energy = ½m(v1² − v2²).

Hint

Convert grams to kilograms first.

Question Info