A body of mass 5kg, initially at rest, is subjected to a force of 20N. What is kinetic energy acquired by the body at the end of 10s?
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u=0m/s m=5Kg F=20N a=F/m 20/5= 4m/s²
t=10s v=at v=4*10 =40m/s
KE=1/2mv²
KE=1/2 *5*40
KE= 100J
8
t=10s v=at v=4*10 =40m/s
KE=1/2mv²
KE=1/2 *5*40
KE= 100J
8
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