Consider the video demonstration that you just watched. Which of the following changes would make it more likely for the ball to hit both the white can and the green can? A. Roll the ball faster.
B. Use a ball that is lighter than the original ball, but still heavier than an empty can.
C. Use a ball that is heavier than the original ball.
D. Roll the ball slower.
E. None of the above

It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .