Question

part 5: calculating speed, distance & time

1. look at the graph above and determine the velocity of the battery car for the first stage of motion if the car first drove north.

step 1: data	step 2: formula	step 3: plug-in	step 4: answer

1. the speed of a cruise ship is 50.0 km/hr. how far will the ship travel in 14.0 hours?

step 1: data	step 2: formula	step 3: plug-in	step 4: answer

1. a runner wants to beat his record time of .50 hr running a 5 km race. if he runs at a speed of 9.2 km/hr, what will his time be for the race?

step 1: data	step 2: formula	step 3: plug-in	step 4: answer

Explanation:

---

Question 2

Step1: List given data

$S=50.0\ \text{km/hr}$, $T=14.0\ \text{hr}$, $D=?$

Step2: Select distance formula

$D = S \times T$

Step3: Substitute values into formula

$D = 50.0\ \text{km/hr} \times 14.0\ \text{hr}$

Step4: Calculate final distance

$D = 700.0\ \text{km}$
---

Question 3

Step1: List given data

$S=9.2\ \text{km/hr}$, $D=5\ \text{km}$, $T=?$

Step2: Select time formula

$T = \frac{D}{S}$

Step3: Substitute values into formula

$T = \frac{5\ \text{km}}{9.2\ \text{km/hr}}$

Step4: Calculate final time

$T \approx 0.54\ \text{hr}$

Step5: Compare to record time

$0.54\ \text{hr} > 0.50\ \text{hr}$, so no record broken.
---
Note: Question 1 cannot be solved as the required motion graph is not provided.

Answer:

1. (Cannot solve: no graph provided)
2. 700.0 km
3. 0.54 hr; No, he did not beat his record.