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Khalifa
Questions and answers by visitors named
Khalifa
Questions (4)
A bullet of mass 45 g is fired at a speed of 220 m/s into a 5.0-kg sandbag hanging from a string from the ceiling. The sandbag
4 answers
1,409 views
Thomas the train and Diesel are involved in an elastic collision. A 2.5 kg Thomas is, at rest but is approached head-on by a 5.0
1 answer
777 views
30 red socks, 22 gold socks and 14 black socks. How many socks would he have to pick up before getting a matching pair?
3 answers
382 views
D is partly constant and partly varies with v ,when v=40, D=150 and when v=54 D=73
a)find the formula connecting D and v b)hence
2 answers
495 views
Answers (1)
v1'=((m1-m2)/(m1+m2))v1 for the bullet =176ms^-1 And for the sandbag at rest v2'=((2m1)/(m1+m2))v1 =396ms^-1 The bullet is conserved after the bullet comes to rest in the bag. Hence Mgh= 1/2mv^2. I got stuck here what is going to be the value of M, is it
