Bob’s little sister (m=40 kg) wants to help with the move. She places boxes on a ramp leading up to the truck at a 30 degree angle and pushes them up. She needs to give them an acceleration of at least 1m/s2 in order for the box to make it to the top. The coefficient of static friction between her shoes and the ground is 0.25. The heaviest box has a mass of 15 kg, and the coefficient of kinetic friction on the ramp is 0.4. Can she give the box a big enough push to reach the top of the ramp without her feet slipping?