Knight Physics Worksheet selections: $1-$D Motion

Sketch position$-$versus$-$time graphs $(x$ versus $t$ or $y$ versus $t)$ for the following motions. Include appropriate numerical scales along both axes. A small amount of computation may be necessary.

a$.$ A parachutist opens her parachute at an altitude of $1500$ m $.$ She then descends slowly to earth at a steady speed of $5\frac{m}{s}.$ Start your graph as her parachute opens.

b$.$ Trucker Bob starts the day $120$ miles west of Denver. He drives east for $3$ hours at a steady $60$mile$\frac{s}{h}$our before stopping for his coffee break. Let Denver be located at $x=0mi$ and assume that the $x-$axis points to the east.

c$.$ Quarterback Bill throws the ball to the right at a speed of $15\frac{m}{s}.$ It is intercepted $45$ m away by Carlos, who is running to the left at $7\mathrm{.}5\frac{m}{s}.$ Carlos carries the ball $60$ m to score. Let $x=0m$ be the point where Bill throws the ball. Draw the graph for the football.