What is the kinetic energy of a 0.4 kg football being thrown at 35 m/s? 14 J 490 J 245 J 137.2 J

Question

What is the kinetic energy of a 0.4 kg football being thrown at 35 m/s?
14 J
490 J
245 J
137.2 J

in progress 0
Thiên Thanh 2 months 2021-07-30T08:05:57+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-07-30T08:07:19+00:00

    Answer:

    245 J

    Explanation:

    1) 35^2 = 1225

    2) 1225 * 0.4 = 490

    3) 490 ÷ 2 = 245

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )