At a Playground, a Child Slides Down a Slide That

Multiple Choice

At a playground, a child slides down a slide that makes a 42° angle with the horizontal direction. The coefficient of kinetic friction for the child sliding on the slide is 0.20. What is the magnitude of her acceleration during her sliding?

A) 4.6 m/s²
B) 5.1 m/s²
C) 5.4 m/s²
D) 6.3 m/s²
E) 9.8 m/s²