17.1 N
11.4 N
36.5 N
5.7 N
Correct answer is B
m=4.56kg;t=16s;v1=(10ms−1,060o);v2=(50ms−1,060o)
Notice that there is no change in the direction of the velocity
So,we don't need to write it in a vector form
a=\frac{∆v}{t}=\frac{50 - 10}{16}
a=\frac{40}{16}=2.5ms^{-2}
F = ma = 4.56 x 2.5
∴ F = 11.4 N
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