Jauye sue
A bullet travelling horizontally with a speed of 30.m sts:
strikes a wooden plank normal to its surface, passing
through it with a speed of 10 m st. Find the time taken
by the bullet to pass through the wooden plank of 5.0 cm
thickness
(1) 2.5 x 10-25
(2) 2.5 x 10-s
(3) 2.5 s
(4) 2.5 x 10-s
Answers
Answered by
2
Answer:
third answer is correct
Answered by
2
Answer:
Using v2 = u2 - 2as and putting v = 100m/s , u = 200m/s and s = 1m we get retardation a = 1.5 × 104 m/s2 so average resitance offered F = ma = (10/1000)1.5 ...
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