A body of weight 1N has a kinetic energy of 1J when its speed is?
a)1.46m/s.
b)2.44m/s.
c)3.42m/s.
d)4.43m/s.
Answers
Answered by
27
Weight = 1
mg = 1
m(10) = 1
m = 0.1kg
K.E. = ½mv²
1 = ½(0.1)v²
v² = 2/0.1
v² = 20
v = 2√5
v ≈ 4.43
i.e.,option (d)
mg = 1
m(10) = 1
m = 0.1kg
K.E. = ½mv²
1 = ½(0.1)v²
v² = 2/0.1
v² = 20
v = 2√5
v ≈ 4.43
i.e.,option (d)
Answered by
0
Answer:
4
Explanation:
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