Question

Jordan is jumping up and down on a trampoline. He has a mass of 55 kg, and his maximum speed
during his first jump is 8 m/s.
1. Does Jordan have kinetic energy during the entire time he is jumping on the trampoline?
2. When during his jumps is Jordan’s kinetic energy the least?
3. When during his jumps is Jordan’s kinetic energy the greatest?
4. Calculate Jordan’s maximum kinetic energy during his first jump. Use the equation
KE=1/2mv^2

Answer 1

i need help with number 4. Plz. fan and medal

Answer 2

for the first qn, answer is no, because when he reaches the top position on his jump, his KE would be zero and PE would be maximum

Answer 3

answer for the second qn is when he is at the top position

Answer 4

now the kinetic energy is greatest at the point when velocity is maximum

Answer 5

KE= 1/2 mv^2
= 1/2*55*8*8=?

Answer 6

:)

Answer 7

thx so much dude

Answer 8

@rohitmathew i cant figure out the last question. can u explain it.

Answer 9

:)

Answer 10

you are not getting the answer?

Answer 11

K.E=(1/2)*mv^2=0.5*55*8^2=?

Answer 12

@ksuk3322 @Joel_the_boss

Answer 13

sure

Answer 14

I need help with number four plz.

Answer 15

KE = Mass*Velocity^2
All divided by 2

Answer 16

The formula KE=1/2mv2 for kinetic energy

Answer 17

i know. but i cant figure out the answer.