What is the wavelength of a photon with a frequency of 8 times ten to the negative 7 meters (8 x 10^-7 m)?

As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road is 100) a) static friction. b) kinetic friction. c) a combination of static and kinetic friction. d) neither static nor kinetic friction, but some other type of friction. e) it is impossible to tell what type of friction acts in this situation.

Will you chech and finish these for me, because i am stumped with them.

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart