A skateboarder is moving to the right

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Linear Momentum · Linear Momentum

Problem

3.0\,\text{kg}

skateboarder is moving

2.0\,\text{m/s}

to the right. While coasting on a level surface, the net horizontal force acting on the skateboarder varies with time as follows: • From

t=0

0.10\,\text s

: constant

+50\,\text N

(to the right) • From

t=0.10\,\text s

0.15\,\text s

: constant

+F_{\text{max}}\,\text N

(to the right) • From

t=0.15\,\text s

0.40\,\text s

: constant

-30\,\text N

(to the left) At

t=0.40\,\text s

the skateboarder’s speed is

8.0\,\text{m/s}

to the right. What is the value of

F_{\text{max}}

? (a)

2.1\times10^{2}\,\text N

(b)

1.1\times10^{2}\,\text N

(c)

4.1\times10^{2}\,\text N

(d)

8.2\times10^{2}\,\text N