A cart initially at rest on a horizontal track is pushed by a net force that varies…

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

Problem

0.50\,\text{kg}

cart initially at rest on a horizontal track is pushed by a net force that varies with time as follows. • From

t=0

0.20\,\text{s}

, the force increases linearly from

0

5.0\,\text{N}

. • From

t=0.20\,\text{s}

0.40\,\text{s}

, the force remains constant at

5.0\,\text{N}

. • From

t=0.40\,\text{s}

0.60\,\text{s}

, the force decreases linearly from

0

-5.0\,\text{N}

. What is the cart’s velocity at

t=0.60\,\text{s}

? (a)

3\,\text{m}\,\text{s}^{-1}

to the right (b)

0\,\text{m}\,\text{s}^{-1}

(c)

1\,\text{m}\,\text{s}^{-1}

to the right (d)

2\,\text{m}\,\text{s}^{-1}

to the right