Julie is cycling at a speed of 3.4 meters/second. If the combined mass of the bicycle and Julie is 30 kilograms, what is the kinetic energy?

a) 1.7 x 10^2 joules
b) 1.5 x 10^2 joules
c) 2.0 x 10^2 joules
d) 2.2 x 10^ joules

Question

Julie is cycling at a speed of 3.4 meters/second. If the combined mass of the bicycle and Julie is 30 kilograms, what is the kinetic energy?

a) 1.7 x 10^2 joules
b) 1.5 x 10^2 joules
c) 2.0 x 10^2 joules
d) 2.2 x 10^ joules

anonymous · Answer

KE = 1/2 mv^2
answer is (a)

anonymous · Answer

Hey the formula that you want to use is KE=1/2mv2 and tou just plug and chug the numbers that you were given.  The answer is 1.7*10^2 Joules/